Updated on 2021/10/28

写真a

 
GOTOH Kazuhiro
 
Organization
Graduate School of Engineering Materials Process Engineering 2 Assistant Professor
Graduate School
Graduate School of Engineering
Undergraduate School
School of Engineering Materials Science and Engineering
Title
Assistant Professor
External link

Degree 3

  1. Doctor (Engineering) ( 2016.3   Tokyo Institute of Technology ) 

  2. Master (Engineering) ( 2013.3   Tokyo Institute of Technology ) 

  3. Bachelor (Science) ( 2011.3   Tokyo University of Science ) 

Research Interests 3

  1. Heteojunction

  2. Solar Cells

  3. 界面制御

Research Areas 2

  1. Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electric and electronic materials

  2. Nanotechnology/Materials / Applied physical properties

Current Research Project and SDGs 3

  1. 酸化チタン薄膜と結晶シリコンとの界面における未結合手不活化における水素機能の解明

  2. 従来にない高効率、低コスト、高耐久性を兼ね備えた太陽電池を実現する要素技術開発

  3. シリコンナノ結晶をキャリア輸送経路に用いた新規導電性保護膜の研究

Research History 2

  1. 名古屋大学大学院   工学研究科物質プロセス工学専攻   助教

    2017.12

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    Country:Japan

  2. 名古屋大学大学院   工学研究科マテリアル理工学専攻   特任助教

    2016.4 - 2017.11

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    Country:Japan

Education 3

  1. Tokyo Institute of Technology   Graduate School, Division of Integrated Science and Engineering   Department of Innovative and Engineered Materials

    2013.4 - 2016.3

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    Country: Japan

  2. Tokyo Institute of Technology   Graduate School, Division of Integrated Science and Engineering   Department of Innovative and Engineered Materials

    2011.4 - 2013.3

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    Country: Japan

  3. Tokyo University of Science   Faculty of Science and Engineering   Department of Physics

    2007.4 - 2011.3

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    Country: Japan

Professional Memberships 4

  1. 日本材料学会   正会員

    2021.10

  2. 日本太陽光発電学会   正会員

    2020.4

  3. IEEE会員

  4. 応用物理学会

Committee Memberships 3

  1. International Conference on Solid State Devices and Materials   Program Committee  

    2021.4   

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    Committee type:Academic society

  2. 33rd International Photovoltaic Science and Engineering Conference (PVSEC-33)   Steering Committee  

    2021.4   

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    Committee type:Academic society

  3. 応用物理学会若手チャプター「太陽光エネルギー変換材料・デバイス開発研究会」   副幹事  

    2018.4   

Awards 4

  1. イノベイティブPV奨励賞

    2019.7   日本学術振興会 175委員会   a-Si:H/c-Siヘテロ構造のパッシベーション性能と水素分布における成膜温度の影響

    後藤 和泰

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  2. 第7回研究部共同研究利用・共同研究若手萌芽研究最優秀賞

    2019.5   東北大学金属材料研究所   結晶シリコン界面の未結合手不活化における水素機能の解明

    後藤和泰,望月 健矢

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    Country:Japan

  3. 薄膜太陽電池奨励賞

    2013.11   薄膜太陽電池セミナー実行委員会   タイプII型Ge/Si量子ドットを導入したヘテロ接合型太陽電池の作製

    後藤 和泰

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  4. 土肥賞

    2013.2   東京工業大学   シリコン基板上自己形成ゲルマニウム量子ドットの高均一かつ高密度化

    後藤 和泰

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    Country:Japan

 

Papers 57

  1. Impact of chemically grown silicon oxide interlayers on the hydrogen distribution at hydrogenated amorphous silicon/crystalline silicon heterointerfaces Reviewed

    K. Gotoh, M. Wilde, S. Ogura, Y. Kurokawa, K. Fukutani, N. Usami

    Applied Surface Science   Vol. 567   page: 150799   2021.11

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

  2. Fabrication of heterojunction crystalline Si solar cells with BaSi2 thin films prepared by 2-step evaporation method Reviewed

    Y. Nakagawa, K. Takahashi, M. Fujiwara, K. O. Hara, K. Gotoh, Y. Kurokawa, T. Itoh, T. Suemasu, and N. Usami

    Japanese Journal of Applied Physics   Vol. 60   page: 105503   2021.9

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    Language:English   Publishing type:Research paper (scientific journal)  

  3. Improved Performance of Titanium Oxide/Silicon Oxide Electron-Selective Contacts by Implementation of Magnesium Interlayers Reviewed

    Y. Nakagawa, K. Gotoh, T. Inoue, Y. Kurokawa, N. Usami

    Physica Status Solidi a   Vol. 218   page: 2100296   2021.8

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

  4. Fabrication of Silicon Nanowire Metal-Oxide-Semiconductor Capacitors with Al2O3/TiO2/Al2O3 Stacked Dielectric Films for the Application to Energy Storage Devices Reviewed

    R. Nezasa, K. Gotoh, S. Kato, S. Miyamoto, N. Usami and Y. Kurokawa

    Energies   Vol. 14   page: 4538   2021.7

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    Language:English   Publishing type:Research paper (scientific journal)  

  5. Application of Bayesian Optimization for High-Performance TiOx/SiOy/c-Si Passivating Contact Reviewed

    Shinsuke Miyagawa, Kazuhiro Gotoh, Kentaro Kutsukake, Yasuyoshi Kurokawa and Noritaka Usami

    Solar Energy Materials & Solar Cells   Vol. 230   page: 111251   2021.6

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    Language:English   Publishing type:Research paper (scientific journal)  

  6. Application of Bayesian optimization for improved passivation performance in TiOx/SiOy/c-Si heterostructure by hydrogen plasma treatment Reviewed

    Miyagawa Shinsuke, Gotoh Kazuhiro, Kutsukake Kentaro, Kurokawa Yasuyoshi, Usami Noritaka

    APPLIED PHYSICS EXPRESS   Vol. 14 ( 2 )   2021.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.35848/1882-0786/abd869

    Web of Science

  7. Simulation study on lateral minority carrier transport in the surface inversion layer of the p-aSi:H/i-aSi:H/cSi heterojunction solar cell Reviewed

    Kamioka Takefumi, Hayashi Yutaka, Gotoh Kazuhiro, Hara Tomohiko, Ozaki Ryo, Morimura Motoo, Shimizu Ayako, Nakamura Kyotaro, Usami Noritaka, Ogura Atsushi, Ohshita Yoshio

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 60 ( 2 )   2021.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.35848/1347-4065/abdd02

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  8. Passivation mechanism of the high-performance titanium oxide carrier-selective contacts on crystalline silicon studied by spectroscopic ellipsometry Reviewed

    Gotoh Kazuhiro, Miura Hiroyuki, Shimizu Ayako, Kurokawa Yasuyoshi, Usami Noritaka

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 60 ( SB )   2021.1

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.35848/1347-4065/abd6dd

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  9. Activation energy of hydrogen desorption from high-performance titanium oxide carrier-selective contacts with silicon oxide interlayers Reviewed

    Gotoh Kazuhiro, Mochizuki Takeya, Hojo Tomohiko, Shibayama Yuki, Kurokawa Yasuyoshi, Akiyama Eiji, Usami Noritaka

    CURRENT APPLIED PHYSICS   Vol. 21   page: 36 - 42   2021.1

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.cap.2020.10.002

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  10. Impact of Ge deposition temperature on parameters of c-Si solar cells with surface texture formed by etching of Si using SiGe islands as a mask Reviewed

    Nguyen V. H., Novikov A., Shaleev M., Yurasov D., Semma M., Gotoh K., Kurokawa Y., Usami N.

    MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING   Vol. 114   2020.8

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.mssp.2020.105065

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  11. Atomic hydrogen passivation for photoresponsivity enhancement of boron-doped p-BaSi2 films and performance improvement of boron-doped p-BaSi2/n-Si heterojunction solar cells Reviewed

    Xu Zhihao, Sato Takuma, Benincasa Louise, Yamashita Yudai, Deng Tianguo, Gotoh Kazuhiro, Toko Kaoru, Usami Noritaka, Filonov Andrew B., Migas Dmitri B., Shohonov Denis A., Suemasu Takashi

    JOURNAL OF APPLIED PHYSICS   Vol. 127 ( 23 )   2020.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/5.0005763

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  12. Impact of deposition of indium tin oxide double layers on hydrogenated amorphous silicon/crystalline silicon heterojunction Reviewed

    Semma Masanori, Gotoh Kazuhiro, Wilde Markus, Ogura Shohei, Kurokawa Yasuyoshi, Fukutani Katsuyuki, Usami Noritaka

    AIP ADVANCES   Vol. 10 ( 6 )   2020.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/5.0009994

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  13. Undoped p-type BaSi2 emitter prepared by thermal evaporation and post-annealing for crystalline silicon heterojunction solar cells Reviewed

    Kimura Yuki, Gotoh Kazuhiro, Kurokawa Yasuyoshi, Usami Noritaka

    APPLIED PHYSICS EXPRESS   Vol. 13 ( 5 )   2020.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.35848/1882-0786/ab8727

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  14. Significant enhancement of photoresponsivity in As-doped n-BaSi2 epitaxial films by atomic hydrogen passivation Reviewed

    Aonuki Sho, Yamashita Yudai, Sato Takuma, Xu Zhihao, Gotoh Kazuhiro, Toko Kaoru, Terai Yoshikazu, Usami Noritaka, Suemasu Takashi

    APPLIED PHYSICS EXPRESS   Vol. 13 ( 5 ) page: .   2020.5

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  15. Synthesis of Mg2Si thin film by thermal treatment under inert gas atmosphere and evaluation of film quality Reviewed

    Horiba Issei, Fujiwara Michinobu, Nakagawa Yoshihiko, Gotoh Kazuhiro, Kurokawa Yasuyoshi, Itoh Takashi, Usami Noritaka

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 59   2020.4

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.35848/1347-4065/ab6b79

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  16. Surface inversion layer effective minority carrier mobility as one of the measures of surface quality of the p-aSi:H/i-aSi:H/cSi heterojunction solar cell Reviewed

    Kamioka Takefumi, Hayashi Yutaka, Gotoh Kazuhiro, Ozaki Ryo, Nakamura Kyotaro, Morimura Motoo, Naitou Shimako, Usami Noritaka, Ogura Atsushi, Ohshita Yoshio

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 59   2020.4

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.35848/1347-4065/ab70a0

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  17. Effects of evaporation vapor composition and post-annealing conditions on carrier density of undoped BaSi2 evaporated films Reviewed

    Kimura Yuki, Fujiwara Michinobu, Nakagawa Yoshihiko, Gotoh Kazuhiro, Kurokawa Yasuyoshi, Usami Noritaka

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 59   2020.4

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.7567/1347-4065/ab6418

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  18. Drastic enhancement of photoresponsivity in C-doped BaSi2 films formed by radio-frequency sputtering Reviewed

    Nemoto T., Matsuno S., Sato T., Gotoh K., Mesuda M., Kuramochi H., Toko K., Usami N., Suemasu T.

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 59   2020.4

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.35848/1347-4065/ab69dc

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  19. Effect of hydrogen plasma treatment on the passivation performance of TiOx on crystalline silicon prepared by atomic layer deposition Reviewed

    Miyagawa Shinsuke, Gotoh Kazuhiro, Ogura Shohei, Wilde Markus, Kurokawa Yasuyoshi, Fukutani Katsuyuki, Usami Noritaka

    JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A   Vol. 38 ( 2 )   2020.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1116/1.5134720

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  20. Effect of forming gas annealing on hydrogen content and surface morphology of titanium oxide coated crystalline silicon heterocontacts Reviewed

    Nakagawa Yuta, Gotoh Kazuhiro, Wilde Markus, Ogura Shohei, Kurokawa Yasuyoshi, Fukutani Katsuyuki, Usami Noritaka

    JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A   Vol. 38 ( 2 )   2020.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1116/1.5134719

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  21. Effect of the Niobium-Doped Titanium Oxide Thickness and Thermal Oxide Layer for Silicon Quantum Dot Solar Cells as a Dopant-Blocking Layer Reviewed

    Akaishi Ryushiro, Kitazawa Kohei, Gotoh Kazuhiro, Kato Shinya, Usami Noritaka, Kurokawa Yasuyoshi

    NANOSCALE RESEARCH LETTERS   Vol. 15 ( 1 )   2020.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/s11671-020-3272-8

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  22. Tuning the Electrical Properties of Titanium Oxide Bilayers Prepared by Atomic Layer Deposition at Different Temperatures Reviewed

    Gotoh Kazuhiro, Mochizuki Takeya, Kurokawa Yasuyoshi, Usami Noritaka

    PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE   Vol. 216 ( 22 )   2019.11

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/pssa.201900495

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  23. Hydrogen concentration at a-Si:H/c-Si heterointerfaces-The impact of deposition temperature on passivation performance Reviewed

    Gotoh Kazuhiro, Wilde Markus, Kato Shinya, Ogura Shohei, Kurokawa Yasuyoshi, Fukutani Katsuyuki, Usami Noritaka

    AIP ADVANCES   Vol. 9 ( 7 )   2019.7

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/1.5100086

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  24. Marked enhancement of the photoresponsivity and minority-carrier lifetime of BaSi2 passivated with atomic hydrogen Reviewed

    Xu Zhihao, Shohonov Denis A., Filonov Andrew B., Gotoh Kazuhiro, Deng Tianguo, Honda Syuta, Toko Kaoru, Usami Noritaka, Migas Dmitri B., Borisenko Victor E., Suemasu Takashi

    PHYSICAL REVIEW MATERIALS   Vol. 3 ( 6 )   2019.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevMaterials.3.065403

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  25. Evidence of solute PEDOT:PSS as an efficient passivation material for fabrication of hybrid c-Si solar cells Reviewed

    Van Hoang Nguyen, Kato Shinya, Gotoh Kazuhiro, Kurokawa Yasuyoshi, Usami Noritaka

    SUSTAINABLE ENERGY & FUELS   Vol. 3 ( 6 ) page: 1448 - 1454   2019.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/c9se00093c

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  26. Epitaxial growth of SiGe on Si substrate by printing and firing of Al-Ge mixed paste Reviewed

    Fukami Shogo, Nakagawa Yoshihiko, Hainey Mel E. Jr., Gotoh Kazuhiro, Kurokawa Yasuyoshi, Nakahara Masahiro, Dhamrin Marwan, Usami Noritaka

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 58 ( 4 )   2019.4

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    DOI: 10.7567/1347-4065/ab00e5

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  27. Impact of size distributions of Ge islands as etching masks for anisotropic etching on formation of anti-reflection structures Reviewed

    Ota Yushi, Yurasov Dmitry, Novikov Alexey, Shaleev Mikhail, Gotoh Kazuhiro, Kurokawa Yasuyoshi, Usami Noritaka

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 58 ( 4 )   2019.4

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    DOI: 10.7567/1347-4065/ab003b

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  28. Silicon Nanowire Heterojunction Solar Cells with an Al2O3 Passivation Film Fabricated by Atomic Layer Deposition Reviewed

    Kato Shinya, Kurokawa Yasuyoshi, Gotoh Kazuhiro, Soga Tetsuo

    NANOSCALE RESEARCH LETTERS   Vol. 14   2019.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/s11671-019-2930-1

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  29. Fabrication of a Silicon Nanowire Solar Cell on a Silicon-on-Insulator Substrate Reviewed

    Kato Shinya, Kurokawa Yasuyoshi, Gotoh Kazuhiro, Soga Tetsuo

    APPLIED SCIENCES-BASEL   Vol. 9 ( 5 )   2019.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.3390/app9050818

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  30. Local Structure of High Performance TiOx Electron-Selective Contact Revealed by Electron Energy Loss Spectroscopy Reviewed

    Mochizuki Takeya, Gotoh Kazuhiro, Kurokawa Yasuyoshi, Yamamoto Takahisa, Usami Noritaka

    ADVANCED MATERIALS INTERFACES   Vol. 6 ( 3 )   2019.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/admi.201801645

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  31. Significant improvement on electrical properties of BaSi2 due to atomic H passivation by radio-frequency plasma Reviewed

    Xu Zhihao, Gotoh Kazuhiro, Deng Tianguo, Toko Kaoru, Usami Noritaka, Suemasu Takashi

    Proceedings for IEEE-PVSC2019     page: 12-14   2019

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    Language:English   Publishing type:Research paper (international conference proceedings)  

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  32. Electrical properties of TiOx bilayer prepared by atomic layer deposition at different temperatures Reviewed

    Takeya Mochizuki; Kazuhiro Gotoh; Yasuyoshi Kurokawa; Noritaka Usami

    Proceedings for IEEE-PVSC2019     2019

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  33. Activation mechanism of TiOx passivating layer on crystalline Si Reviewed

    Mochizuki Takeya, Gotoh Kazuhiro, Ohta Akio, Ogura Shohei, Kurokawa Yasuyoshi, Miyazaki Seiichi, Fukutani Katsuyuki, Usami Noritaka

    APPLIED PHYSICS EXPRESS   Vol. 11 ( 10 )   2018.10

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.7567/APEX.11.102301

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  34. Impact of boron incorporation on properties of silicon solar cells employing p-type polycrystalline silicon grown by aluminum-induced crystallization Reviewed

    Masuda Shota, Gotoh Kazuhiro, Takahashi Isao, Nakamura Kyotaro, Ohshita Yoshio, Usami Noritaka

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 57 ( 8 )   2018.8

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.7567/JJAP.57.08RB12

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  35. Fabrication of light-trapping structure by selective etching of thin Si substrates masked with a Ge dot layer and nanomasks Reviewed

    Hombe Atsushi, Kurokawa Yasuyoshi, Gotoh Kazuhiro, Akagi Seimei, Yamamoto Yuzo, Yurasov Dmitry, Novikov Alexey, Usami Noritaka

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 57 ( 8 )   2018.8

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.7567/JJAP.57.08RF09

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  36. Effect of substrate type on the electrical and structural properties of TiO2 thin films deposited by reactive DC sputtering Reviewed

    Cheng Xuemei, Gotoh Kazuhiro, Nakagawa Yoshihiko, Usami Noritaka

    JOURNAL OF CRYSTAL GROWTH   Vol. 491   page: 120-125   2018.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jcrysgro.2018.04.001

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  37. Improving the photoresponse spectra of BaSi2 layers by capping with hydrogenated amorphous Si layers prepared by radio-frequency hydrogen plasma Reviewed

    Xu Zhihao, Gotoh Kazuhiro, Deng Tianguo, Sato Takuma, Takabe Ryota, Toko Kaoru, Usami Noritaka, Suemasu Takashi

    AIP ADVANCES   Vol. 8 ( 5 )   2018.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/1.5025021

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  38. Local analysis of TiOx/SiOx stack with excellent electrical properties for carrier selective contact

    Takeya Mochizuki, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Takahisa Yamamoto, Noritaka Usami

    Proceedings for The Forum on the Science and Technology of Silicon Materials 2018     page: 1-4   2018

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  39. Controllable optical and electrical properties of Nb doped TiO2 films by RF sputtering Reviewed

    Xuemei Cheng, K. Gotoh, T. Mochizuki and N. Usami

    Proceedings for WCPEC-7     page: 1-3   2018

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  40. Local Structure of High Performance TiOx Passivating Layer Revealed by Electron Energy Loss Spectroscopy Reviewed

    Takeya Mochizuki, Kazuhiro Gotoh, Akio Ohta, Yasuyoshi Kurokawa, Seiichi Miyazaki, Takahisa Yamamoto, Noritaka Usami

    Proceedings for WCPEC-7     page: 1-4   2018

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  41. Development of the Passivation Layer For P-type CuI Thin Film Fabricated by the 2-step Method as the Novel Hole Selective Contact of Silicon Heterojunction Solar Cells Reviewed

    Cui Min, Gotoh Kazuhiro, Kurokawa Yasuyoshi, Usami Noritaka

    Proceedings for WCPEC-7     page: 2118-2120   2018

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  42. Deposition and Characterization of Si Quantum Dot Multilayers Prepared by Plasma Enhanced Chemical Vapor Deposition using SiH4 and CO2 Gases Reviewed

    Akaishi Ryushiro, Kitazawa Kouhei, Ono Satoshi, Gotoh Kazuhiro, Ichihara Eiji, Kato Shinya, Usami Noritaka, Kurokawa Yasuyoshi

    Proceedings for WCPEC-7     page: 2852-2856   2018

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  43. Controllable Optical and Electrical Properties of Nb Doped TiO2 Films by RF Sputtering Reviewed

    Cheng Xuemei, Gotoh Kazuhiro, Mochizuki Takeya, Usami Noritaka

    Proceedings for WCPEC-7     page: 1986-1990   2018

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  44. Application of light trapping structure using Ge dot mask by alkaline etching to heterojunction solar cell Reviewed

    Hombe Atsushi, Kurokawa Yasuyoshi, Gotoh Kazuhiro, Usami Noritaka

    Proceedings for WCPEC-7     page: 3097-3101   2018

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  45. Improving Intrinsic Silicon Nanoparticle Film by Press Treatment for use in p-i n Solar Cells Reviewed

    Ichihara Eiji, Kato Shinya, Akaishi Ryushiro, Gotoh Kazuhiro, Kurokawa Yasuyoshi, Kishi Naoki, Soga Tetsuo

    Proceedings for WCPEC-7     page: 0317-0320   2018

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  46. Photoresponsivity improvement of BaSi2 epitaxial films by capping with hydrogenated amorphous Si layers by radio-frequency H-2 plasma Reviewed

    Xu Zhihao, Gotoh Kazuhiro, Deng Tianguo, Sato Takuma, Toko Kaoru, Usami Noritaka, Suemasu Takashi

    Proceedings for WCPEC-7     page: 1871-1873   2018

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  47. Stacks of a-SiOx:H/a-Si:H Passivation Layer for Low Parasitic Absorption and High Passivation in Silicon Heterojunction Solar Cells Reviewed

    K. Gotoh, M. Cui, R. Akaishi, Y. Kurokawa, N. Usami

    Proceedings for EUPVSEC2018     2018

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  48. Boron-doped p-BaSi2/n-Si solar cells formed on textured n-Si(001) with a pyramid structure consisting of {111} facets Reviewed

    Deng Tianguo, Gotoh Kazuhiro, Takabe Ryota, Xu Zhihao, Yachi Suguru, Yamashita Yudai, Toko Kaoru, Usami Noritaka, Suemasu Takashi

    JOURNAL OF CRYSTAL GROWTH   Vol. 475   page: 186-191   2017.10

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jcrysgro.2017.06.017

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  49. Development of spin-coated copper iodide film on silicon for use in hole-selective contacts Reviewed

    K. Gotoh, M. Cui, I. Takahashi, Y. Kurokawa, N. Usami

    Energy Procedia   Vol. 124   page: 598-603   2017

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  50. Fabrication of CuI/a-Si:H/c-Si Structure for Application to Hole-selective Contacts of Heterojunction Si Solar Cells Reviewed

    K. Gotoh, M. Cui, N. C. Thanh, K. Koyama, I. Takahashi, Y. Kurokawa, H. Matsumura, N. Usami

    44th IEEE PVSC Conference Proceeding     page: 0000   2017

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    Authorship:Lead author   Language:English   Publishing type:Research paper (international conference proceedings)  

  51. Boron-doped p-baSi2/n-Si solar cells formed on textured n-Si(001) with a pyramid structure consisting of {111} facets Reviewed

    T. Deng, K. Gotoh, R. Takabe, Z. Xu, S. Yachi, Y. Yamashita, K. Toko, N. Usami, T. Suemasu

    Journal of Crystal Growth   Vol. 475   page: 186-191   2017

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    Language:English   Publishing type:Research paper (scientific journal)  

  52. Solar Cells Application of p-type poly-Si Thin Film by Aluminum Induced Crystallization Reviewed

    S. Masuda, K. Gotoh, I. Takahashi, K. Nakamura, Y. Oshita, Y. Kurokawa, N. Usami

    44th IEEE PVSC Conference Proceeding     page: 0000   2017

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    Language:English   Publishing type:Research paper (international conference proceedings)  

  53. Fabrication of strain-compensated heterojunction Ge/Si1-xCx quantum dots solar cells Reviewed

    K. Gotoh, R. Oshima, T. Yayagaki, T. Sugaya, K. Matsubara, M. Kondo

    32nd EUPVSEC Proceeding     page: 28-31   2016

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    Authorship:Lead author   Language:English   Publishing type:Research paper (international conference proceedings)  

  54. Strain-compensated Ge/Si1-xCx quantum dots with Si mediating layers grown by molecular beam epitaxy Reviewed

    K. Gotoh, R. Oshima, T. Sugaya, I. Sakata, K. Matsubara, M. Kondo

    Journal of Crystal Growth   Vol. 425   page: 167-171   2015

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  55. Effect of deposition rate on the characteristics of Ge quantum dots on Si(001) substrates Reviewed

    K. Gotoh, R. Oshima, T. Sugaya, I. Sakata, K. Matsubara, M. Kondo

    Thin Solid Films   Vol. 557   page: 80-83   2014

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  56. Optical and structural studies of highly uniform Ge quantum dots on Si(001) substrate grown by solid-source molecular beam epitaxy Reviewed

    K. Gotoh, R. Oshima, T. Sugaya, I. Sakata, K. Matsubara, M. Kondo

    Journal of Crystal Growth   Vol. 378   page: 439-441   2013

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  57. Fabrication of type-II self-assembled Ge/Si quantum dots for high efficiency solar cells Reviewed

    K. Gotoh, R. Oshima, T. Sugaya, I. Sakata, K. Matsubara, M. Kondo

    28th EUPVSEC Proceeding     page: 147-150   2013

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▼display all

MISC 1

  1. 水素局在化によるヘテロ界面機能の強化 Invited Reviewed

    後藤和泰、宇佐美徳隆

    セラミックス協会   Vol. 56 ( 2 ) page: 80 - 83   2021.2

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    Authorship:Lead author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

Presentations 132

  1. 水素パッシベーションによるAs-doped n-BaSi2膜の分光感度向上及び第一原理計算を用いた考察

    青貫翔, 山下雄大, Z. Xu, 後藤和泰, 都甲薫, 宇佐美徳隆, D. Migas, 末益宗

    第18回次世代の太陽光発電システムシンポジウム  2021.10.15  日本太陽光発電学会

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    Event date: 2021.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン  

  2. TiOx/結晶Siヘテロ構造における電極製膜後のパッシベーション性能の定量的評価の検討

    深谷昌平, 後藤和泰, 松井卓矢, 齋均, 黒川康良, 宇佐美徳隆

    第18回次世代の太陽光発電システムシンポジウム  2021.10.15  日本太陽光発電学会

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    Event date: 2021.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン  

  3. 真空蒸着法により作製したMg₂Si薄膜の高品質化に向けたface-to-faceアニール効果

    佐藤 海誓,宮本 聡,後藤 和泰, 黒川 康良, 伊藤 孝至, 宇佐美 徳隆

    第82回応用物理学会秋季学術講演会  2021.9.11  応用物理学会

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン  

  4. a-Si:H層のPECVD成膜による結晶シリコンへのダメージの評価

    小島遥希、西原達平、後藤和泰、宇佐美徳隆、原友彦、大下祥雄、小椋厚志

    第82回応用物理学会秋季学術講演会  2021.9.10  応用物理学会

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン  

  5. シリコンナノ結晶/酸化シリコン複合膜におけるキャリア選択能の水素プラズマ処理温度依存性

    松見優志,後藤和泰,ビルデ マーカス,黒川康良,福谷克之,宇佐美徳隆

    第82回応用物理学会秋季学術講演会  2021.9.10  応用物理学会

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン  

  6. ベイズ最適化を援用したシリコン量子ドット積層構造の欠陥低減

    熊谷風雅,宮川晋輔, 後藤和泰, 沓掛健太朗, 加藤慎也, 宇佐美徳隆, 黒川康良

    第82回応用物理学会秋季学術講演会  2021.9.10  応用物理学会

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン  

  7. 真空蒸着法によるステンレス基板上へのBaSi2薄膜の作製

    陳 嘉坤,宮本 聡,後藤 和泰, 黒川 康良, 宇佐美 徳隆

    第19回シリサイド系半導体・夏の学校  2021.8.21  応用物理学会シリサイド系半導体と関連物質研究会

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    Event date: 2021.8

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン  

  8. Face-to-faceアニールを用いて作製したMg₂Si薄膜のラマン散乱解析

    佐藤 海誓,宮本 聡,後藤 和泰, 黒川 康良, 伊藤 孝至, 宇佐美 徳隆

    第19回シリサイド系半導体・夏の学校  2021.8.21  応用物理学会シリサイド系半導体と関連物質研究会

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    Event date: 2021.8

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン  

  9. DEVELOPMENT OF SILICON-NANOCRYSTALS-EMBEDDED SILICON OXIDE PASSIVATING CONTACTS FOR USE IN CRYSTALLINE SILICON SOLAR CELLS Invited International conference

    K. Gotoh, R. Tsubata, M. Matsumi, M. Wilde, T. Inoue, Y. Kurokawa, K. Fukutani and N. Usami

    Global Photovoltaic Conference 2021 (GPVC 2021)  2021.7.9 

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    Event date: 2021.7

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Hybrid (Gwangju/virtural)  

  10. Realization of the Cystalline Silicon Solar Cell Using Nanocrystalline Transport Path in Ultra-thin Dielectrics for Reinforced Passivating Contact International conference

    R. Tsubata, K. Gotoh, T. Inoue, Y. Kurokawa, and N. Usami

    48th IEEE Photovoltaic Specialists Conference  2021.6.21 

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    Event date: 2021.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Online  

  11. 極薄シリコン酸化膜をパッシベーティングコンタクトとして用いた太陽電池の 研究開発動向 Invited

    後藤 和泰

    日本太陽光発電学会 次世代太陽電池セル・モジュール分科会 第1回研究会  2021.6.8  日本太陽光発電学会

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    Event date: 2021.6

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン  

  12. Application of Bayesian Optimization for Improved Passivation Performance in TiOx/SiOy/c-Si Heterostructure by Hydrogen Plasma Treatment International conference

    Shinsuke Miyagawa, Kazuhiro Gotoh, Kentaro Kutsukake, Yasuyoshi Kurokawa, Noritaka Usami

    11th International Conference on Crystalline Silicon Photovoltaics  2021.4.21 

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    Event date: 2021.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Online  

  13. Improved Performance of Titanium Oxide Electron-Selective Contact by Implementation of Magnesium Interlayer International conference

    Yuta Nakagawa, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami

    11th International Conference on Crystalline Silicon Photovoltaics  2021.4.21 

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    Event date: 2021.4

    Language:English   Presentation type:Poster presentation  

    Venue:Online  

  14. ベイズ最適化を援用した高性能パッシベーティングコンタクトの実現 ~TiOx/結晶Siヘテロ構造への適用~

    宮川晋輔, 後藤和泰, 沓掛健太朗, 黒川康良, 宇佐美徳隆

    第68回応用物理学会春季学術講演会  2021.3.18 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  15. シリコンナノ結晶/酸化シリコンを複合化した導電性パッシベーション膜の太陽電池応用

    津幡亮平, 後藤和泰, 黒川康良, 宇佐美徳隆

    第68回応用物理学会春季学術講演会  2021.3.18 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  16. シリコンナノ結晶/酸化シリコン複合膜に対する水素化処理の検討

    松見優志, 後藤和泰, ビルデマーカス, 黒川康良, 福谷克之, 宇佐美徳隆

    第68回応用物理学会春季学術講演会  2021.3.18 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  17. 成長速度の二段階制御による真空蒸着BaSi2薄膜の高品質化

    吉野孝政, 後藤和泰, 黒川康良, 宇佐美徳隆

    第3回結晶工学×ISYSE合同研究会  2020.12.23 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  18. ベイズ最適化を用いたTiOx/SiOy結晶Siへテロ構造における水素プラズマ処理条件の最適化

    宮川晋輔, 後藤和泰, 沓掛健太朗, 黒川康良, 宇佐美徳隆

    第3回結晶工学×ISYSE合同研究会  2020.12.23 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  19. Effect of forming gas annealing on hydrogen content and surface morphology of titanium oxide-coated crystalline silicon heterocontacts International conference

    Yuta Nakagawa, Kazuhiro Gotoh, Markus Wilde, Shohei Ogura, Yasuyoshi Kurokawa, Katsuyuki Fukutani, Noritaka Usami

    The 30th International Photovoltaic Science and Engineering Conference (PVSEC-30)  2020.11.11 

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    Event date: 2020.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  20. DEPENDENCE OF ELECTRICAL PROPERTIES OF STACKED SN-DOPED IN2O3 FILMS ON OXYGEN PARTIAL PRESSURE International conference

    Tetsuya Inoue, Kazuhiro Gotoh, Yasuyoshi Kurokawa, and Noritaka Usami

    The 30th International Photovoltaic Science and Engineering Conference (PVSEC-30)  2020.11.11 

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    Event date: 2020.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  21. CARBON DIOXIDE/ SILANE GAS FLOW RATE DEPENDENCY ON ELECTRICAL PROPERTIES IN SILICON-NANOCRYSTALS-EMBEDDED SILICON OXIDE PASSIVATING CONTACTS International conference

    Ryohei Tsubata, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami

    The 30th International Photovoltaic Science and Engineering Conference (PVSEC-30)  2020.11.11 

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    Event date: 2020.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  22. Impact of hydrogen plasma treatment on the passivation performance of TiOx prepared on crystalline silicon by atomic layer deposition International conference

    Shinsuke Miyagawa, Kazuhiro Gotoh, Shohei Ogura, Markus Wilde, Yasuyoshi Kurokawa, Katsuyuki Fukutani, Noritaka Usami

    The 30th International Photovoltaic Science and Engineering Conference (PVSEC-30)  2020.11.11 

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    Event date: 2020.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  23. Improvement of BaSi2 thin film quality by two-step growth rate control of vacuum evaporation International conference

    Takamasa Yoshino, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami

    The 30th International Photovoltaic Science and Engineering Conference (PVSEC-30)  2020.11.10 

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    Event date: 2020.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  24. 光電子ピンセットにより制御されたコロイド結晶化のその場観察

    中川原英亜, 新家寛正, 石川晃平, 後藤和泰, 野澤純, 岡田純平, 宇田聡

    第50回結晶成長国内会議  2020.11.9 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  25. 成長速度の二段階制御による真空蒸着BaSi2薄膜の高品質化

    吉野孝政, 後藤和泰, 黒川康良, 宇佐美徳隆

    第17回「次世代の太陽光発電システム」シンポジウム  2020.10.16 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  26. 積層Sn添加In2O3薄膜における電気的特性の酸素分圧依存性

    井上徹哉, 後藤和泰, 黒川康良, 宇佐美徳隆

    第17回「次世代の太陽光発電システム」シンポジウム  2020.10.16 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  27. シリコンナノ結晶/酸化シリコン復合膜における炭酸ガス/シランガス流量比依存性

    津幡亮平, 後藤和泰, 黒川康良, 宇佐美徳隆

    第17回「次世代の太陽光発電システム」シンポジウム  2020.10.16 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  28. ベイズ最適化を用いたTiOx/SiOy結晶Siへテロ構造における水素プラズマ処理条件の最適化

    宮川晋輔, 後藤和泰, 沓掛健太朗, 黒川康良, 宇佐美徳隆

    第17回「次世代の太陽光発電システム」シンポジウム  2020.10.16 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  29. Mg層を挿入したTiOx/SiOy/Si構造の接合特性のTiOx膜厚依存性

    中川裕太, 後藤和泰, 黒川康良, 宇佐美徳隆

    第17回「次世代の太陽光発電システム」シンポジウム  2020.10.16 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  30. 原子層堆積法で作製した酸化チタンの結晶シリコンに対するパッシベーション効果の発現機構

    後藤 和泰

    日本表面真空学会分科会: SP部会第164回定例研究会  2020.9.7 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  31. Passivation Mechanism of the High-performance Titanium Oxide Passivating Contacts on Crystalline Silicon Studied by Spectroscopic Ellipsometry International conference

    K. Gotoh, H. Miura, A. Shimizu, T. Kurokawa, and N. Usami

    2020 International Conference on Solid State Devices and Materials (SSDM 2020)  2020.9.30 

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    Event date: 2020.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  32. Fabrication of TiOx thin film on Si using solution-based process and its passivation performance International conference

    H. Luo, V. H. Nguyen, K. Gotoh, Y. Kurokawa, and N. Usami

    2020 International Conference on Solid State Devices and Materials (SSDM 2020)  2020.9.30 

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    Event date: 2020.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  33. Size effect of silicon nanocrystals on Seebeck coefficient of phosphorus-doped Si nanocrystals/silicon oxide multilayers International conference

    H. Kobayashi, S. Kato, M. Kurosawa, K. Gotoh, N. Usami, and Y. Kurokawa

    2020 International Conference on Solid State Devices and Materials (SSDM 2020)  2020.9.28 

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    Event date: 2020.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  34. Mg層挿入によるTiOx/Siヘテロ接合の接合特性の向上

    中川 裕太, 後藤 和泰, 黒川 康良, 宇佐美 徳隆

    第81回応用物理学会秋季学術講演会  2020.9.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  35. シリコンナノ結晶/酸化シリコンを複合化した導電性パッシベーション膜の検討

    津幡 亮平, 後藤 和泰, ⿊川 康良, 宇佐美 徳隆

    第81回応用物理学会秋季学術講演会  2020.9.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  36. ベイズ最適化を用いた酸化チタンパッシベーション膜における水素プラズマ処理条件の最適化

    宮川 晋輔, 後藤 和泰, 沓掛 健太朗,  黒川 康良, 宇佐美 徳隆

    第81回応用物理学会秋季学術講演会  2020.9.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  37. Formation of p-Type BaSi2 Thin Film and its Application to Silicon-Based Heterojunction Solar Cells International conference

    Yuki Kimura, Michinobu Fujiwara, Kazuma Takahashi, Yoshihiko Nakagawa, Takamasa Yoshino, Kazuhiro Gotoh, Yasuyoshi Kurokawa, and Noritaka Usami

    37th European PV Solar Eneregy Conference and Exhibition  2020.9.8 

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    Event date: 2020.9

    Language:English   Presentation type:Oral presentation (general)  

  38. Effect of Hydrogen Plasma Treatment on Silicon Quantum Dot Multilalyers Using Amorphous SiOx International conference

    R. Akaishi, K. Gotoh, N. Usami & Y. Kurokawa

    37th European PV Solar Eneregy Conference and Exhibition  2020.9.8 

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    Event date: 2020.9

    Language:English   Presentation type:Poster presentation  

  39. Work function of indium oxide thin films on p-type hydrogenated amorphous silicon International conference

    Masanori Semma, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami

    47th IEEE Photovoltaic Specialists Conference (PVSC 47)  2020.6.15 

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    Event date: 2020.6

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  40. Fabrication of silicon-nanocrystals-embedded silicon oxide passivating contacts International conference

    Ryohei Tsubata, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami

    47th IEEE Photovoltaic Specialists Conference (PVSC 47)  2020.6.15 

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    Event date: 2020.6

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  41. MoOx CSC/Si太陽電池のPDAによる特性変動 (3)-表⾯反転層をチャネルとするFET-TEGのS/Dコンダクタンスによる評価

    林 豊, 神岡 武⽂,後藤 和泰, 尾崎 亮, 中村 京太郎, 森村 元勇, 宇佐美 徳隆, ⼤下 祥雄, ⼩椋 厚志

    第67回応用物理学会春季学術講演会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  42. ポストアニール処理を用いたアンドープp-BaSi2/n-Siヘテロ接合太陽電池の作製

    木村 裕希, 吉野 孝政, 後藤 和泰, 黒川 康良, 宇佐美 徳隆

    第67回応用物理学会春季学術講演会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  43. 核反応解析法と原⼦間⼒顕微鏡を⽤いたTiOx/SiOx/Siヘテロ 構造におけるパッシベーション性能の⽀配要因

    中川 裕太, 後藤 和泰, ビルデ マーカス, ⼩倉 正平, ⿊ 川 康良, 福⾕ 克之, 宇佐美 徳隆

    第67回応用物理学会春季学術講演会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  44. 酸化チタン/結晶シリコンヘテロ構造における水素プラズマ処理の効果

    宮川 晋輔, 後藤 和泰, Markus Wilde,小倉 正平, 黒川 康良, 福谷 克之, 宇佐美 徳隆

    第67回応用物理学会春季学術講演会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  45. Marked photoresponsivity enhancement and minority carrier lifetime increase of boron-doped BaSi2 by atomic H passivation International conference

    Zhihao Xu, Kazuhiro Gotoh, Kaoru Toko, Noritaka Usami, Takashi Suemasu

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    Event date: 2020.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  46. 不活性ガス雰囲気下での熱処理を⽤いたクラックフリーMg2Si厚膜 の合成

    堀場 ⼀成, 後藤 和泰, ⿊川 康良, 伊藤 孝⾄, 宇佐美 徳隆

    第67回応用物理学会春季学術講演会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  47. Activation energy of hydrogen effusion of high performance TiOx/SiOx/c-Si heterocontacts International conference

    Kazuhiro Gotoh, Takeya Mochizuki, Tomohiko Hojo, Yasuyoshi Kurokawa, Eiji Akiyama, Noritaka Usami

    Material Reserch Meeting 2019 

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    Event date: 2019.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  48. 酸化チタン/結晶シリコンヘテロ構造における水素プラズマ処理の影響

    宮川 晋輔, 後藤 和泰, Markus Wilde,小倉 正平, 黒川 康良, 福谷 克之, 宇佐美 徳隆

    第2回ハイドロジェノミクス研究会 

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    Event date: 2019.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  49. 分光エリプソメトリーを用いた酸化チタン パッシベーション膜のポストアニール効果に関する研究

    後藤和泰, 三浦裕之, 清水彩子, 宮川晋輔, 中川裕太, 黒川康良, 宇佐美徳隆

    第4回フロンティア太陽電池セミナー 

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    Event date: 2019.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  50. ポストアニール条件がアンドープBaSi2薄膜のキャリア密度に与える影響

    木村 裕希, 藤原 道信, 中川 慶彦, 後藤 和泰, 黒川 康良, 宇佐美 徳隆

    第2回結晶工学×ISYSE合同研究会 

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    Event date: 2019.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  51. 不活性ガス雰囲気下での熱処理を用いたMg2Si薄膜の作製とその膜質評価

    堀場一成, 藤原道信, 中川慶彦, 後藤和泰, 黒川康義, 伊藤孝至, 宇佐美徳隆

    第2回結晶工学×ISYSE合同研究会 

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    Event date: 2019.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  52. New Analysis Method to Evaluate Amorphous/Crystalline Si Interface for High Efficiency Heterojunction Solar Cells International conference

    Takefumi Kamioka, Yutaka Hayashi, Kazuhiro Gotoh, Ryo Ozaki, Motoo Morimura, Ayako Shimizu, Kyotaro Nakamura, Noritaka Usami, Yoshio Ohshita, Atsushi Ogura

    PVSEC-29 

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    Event date: 2019.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:China  

  53. Characteriztion of Silicon Quntum Dot Solar Cell with the Phosphorus Blocking Layer International conference

    Ryushiro Akaishi Kazuhiro Gotoh Shinya Kato Noritaka Usami Yasuyoshi Kurokawa

    PVSEC-29 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

    Country:China  

  54. Impact of indium tin oxide double layers deposition on the passivation performance of a-Si:H/c-Si heterocontact International conference

    Masanori Semma, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami

    PVSEC-29 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

    Country:China  

  55. Evidence of Solute PEDOT:PSS as an Efficient Passivation Material International conference

    Van Hoang Nguyen, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami, Shinya Kato

    EU PVSEC 2019, the 36th European Photovoltaic Solar Energy Conference and Exhibition 

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    Event date: 2019.9

    Language:English   Presentation type:Poster presentation  

    Country:France  

  56. Solute PEDOT:PSS as an Excellent Passivation Material of Si Substrate International conference

    Van Hoang Nguyen, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami, Shinya Kato

    2019 International Conference on Solid State Devices and Materials 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  57. New Analysis Method to Evaluate Amorphous/Crystalline Si Interface for High Efficiency Heterojunction Solar Cells International conference

    Yutaka Hayashi, Takefumi Kamioka, Kazuhiro Gotoh, Ryo Ozaki, Kyotaro Nakamura, Motoo Morimura, Shimako Naito, Noritaka Usami, Atsushi Ogura, Yoshio Ohshita

    2019 International Conference on Solid State Devices and Materials 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  58. TiOx/SiOx/結晶Siヘテロ界面における水素の脱離エネルギー

    後藤 和泰、望月 健矢、北條 智彦、黒川 康良、秋山 英二、宇佐美 徳隆

    新学術「ハイドロジェノミクス」 第4回若手育成スクール 

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    Event date: 2019.8

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  59. 酸化チタン/結晶シリコンヘテロ構造における水素プラズマ処理の検討

    宮川 晋輔、後藤 和泰、黒川 康良、 宇佐美 徳隆

    新学術「ハイドロジェノミクス」 第4回若手育成スクール 

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    Event date: 2019.8

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  60. 原子層堆積法による結晶Si/SiOx/TiOx構造の作製と熱処理の効果

    中川 裕太、後藤 和泰、宮本 聡、黒川 康良、宇佐美 徳隆

    新学術「ハイドロジェノミクス」 第4回若手育成スクール 

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    Event date: 2019.8

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  61. 水素プラズマ処理によるシリコン量子ドット積層構造の欠陥密度低減と構造特性評価

    赤石 龍士郎、後藤 和泰、黒川 康良, 宇佐美 徳隆

    新学術「ハイドロジェノミクス」 第4回若手育成スクール 

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    Event date: 2019.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  62. キャリア輸送経路にナノドットを用いたパッシベーション膜の作製と評価

    津幡 亮平 後藤 和泰 黒川 康良 宇佐美 徳隆

    応用物理学会 若手チャプター 「太陽光エネルギー変換材料・デバイス研究会」 第1回サマーセミナー  

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    Event date: 2019.8

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  63. TiOx/結晶Siの電気的特性における光照射効果

    宮川 晋輔 後藤 和泰 黒川 康良, 宇佐美 徳隆

    応用物理学会 若手チャプター 「太陽光エネルギー変換材料・デバイス研究会」 第1回サマーセミナー  

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    Event date: 2019.8

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  64. Synthesis of Mg2Si thin film by thermal treatment under inert gas atmosphere and evaluation of film quality International conference

    Issei Horiba, Michinobu Fujiwara, Yoshihiko Nakagawa, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Takashi Itoh, Noritaka Usami

    APAC-Silicide 2019 

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    Event date: 2019.7

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  65. Influence of Post Annealing Conditions on Carrier Density of Undoped Evaporated BaSi 2 Films International conference

    Yuki Kimura, Michinobu Fujiwara, Yoshihiko Nakagawa, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami

    APAC-Silicide 2019 

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    Event date: 2019.7

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  66. ITO積層化のa-Si:H/c-Si界面パッシベーション性能に及ぼす影響

    扇間 政典, 後藤 和泰, 黒川 康良, 宇佐美 徳隆

    学振175委員会 第16回 「次世代の太陽光発電システム」シンポジウム 

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    Event date: 2019.7

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  67. a-Si:H/c-Siヘテロ構造のパッシベーション性能と水素分布における製膜温度の影響

    後藤 和泰,ビルデ マーカス, 加藤 慎也, 小倉 正平, 黒川 康良, 福谷 克之, 宇佐美 徳隆

    学振175委員会 第16回 「次世代の太陽光発電システム」シンポジウム 

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    Event date: 2019.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  68. Significant improvement of optical properties of BaSi2 due to atomic H passivation by radio-frequency plasma International conference

    Zhihao Xu, Kazuhiro Gotoh, Tianguo Deng, Kaoru Toko, Noritaka Usami, Takashi Suemasu

    The 64th IEEE Photovoltaics Specialist Conference 

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    Event date: 2019.6

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  69. Electrical properties of TiOx bilayer prepared by atomic layer deposition at different temperatures International conference

    Takeya Mochizuki, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami

    The 64th IEEE Photovoltaics Specialist Conference 

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    Event date: 2019.6

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  70. Impact of pre-oxidation on hydrogen depth profiles around a-Si:H/c-Si heterointerface International conference

    Kazuhiro Gotoh, Shohei Ogura, Yasuyoshi Kurokawa, Markus Wilde, Katsuyuki Fukutani, Noritaka Usami

    SiliconPV 2019 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Belgium  

  71. Surface passivation of low temperature processed titanium oxide /alluminium oxide for silicon substrate International conference

    X. Cheng, K. Gotoh, T., N. Usami

    Global Photovoltaic Conference 2019 

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    Event date: 2019.3

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  72. Impact of textured structure on performance of PEDOT:PSS hybrid Si solar cells International conference

    V.H. Nguyen , Y. Ota, A. Novikov, M. Shaleev, K. Gotoh, Y. Kurokawa, N. Usami

    XXIII International symposium "Nanophysics & Nanoelectronics" 

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    Event date: 2019.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Russian Federation  

  73. Using Ge (Si) islands to increase the efficiency of thin crystalline solar cells International conference

    Mv Shaleev, A.V. Novikov, D.V. Yurasov, N.A. Baidakova, E.E. Morozova, Y. Ota, V.H. Nguyen, K. Gotokh, Y. Kurokawa, N. Usami

    XXIII International symposium "Nanophysics & Nanoelectronics" 

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    Event date: 2019.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Russian Federation  

  74. ALD 法で作製したTiOx 電子選択層の積層化による電気的特性の制御

    望月 健矢, 後藤 和泰, 黒川 康良, 宇佐美 徳隆

    第66回応用物理学会春季学術講演会 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  75. SiOxを障壁層としたSi量⼦ドット太陽電池の作製

    赤石 龍士郎, 北沢 宏平, 加藤 慎也, 後藤 和泰, 宇佐美 徳 隆, 黒川 康良

    第66回応用物理学会春季学術講演会 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  76. 薄型基板上へのGeドットマスクを用いた光閉じ込め構造の作製と太陽電池への応用

    太田 湧士,後藤 和泰,黒川 康良,宇佐美 徳隆 Dmitrij Yurasov, Alexey Novikov, Mikhail Shaleev

    第66回応用物理学会春季学術講演会 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  77. ポストアニール条件がBaSi2薄膜のキャリア密度に与える影響

    木村 裕希, 藤原 道信, 中川 慶彦, 後藤 和泰, 黒川 康良, 宇佐美 徳隆

    第66回応用物理学会春季学術講演会 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  78. 印刷と焼成によるSi基板上へのSiGe層のエピタキシャル成長におけるSi基板方位の影響 International conference

    中原 正博、深見 昌吾、Mel F. Hainey, Jr.、中川 慶彦、有元 圭介、後藤 和泰、 黒川 康良、前田 健作、藤原 航三、ダムリン マルワン、宇佐美 徳隆

    第66回応用物理学会春季学術講演会 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  79. ALD法で作製した法で作製したTiOx/SiOx/結晶Siヘテロ界面のパッシベーョン効果発現メカニズム〜水素原子脱離の影響〜

    望月 健矢, 後藤 和泰, 北條 智彦, 黒川 康良, 秋山 英二, 宇佐美 徳隆

    第66回応用物理学会春季学術講演会 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  80. Silicon Quantum Dot Superlattice Structure for Next Generation Solar Cell Application International conference

    Ryushiro Akaishi, Kohei Kitazawa, Kazuhiro Gotoh, Shinya Kato, Noritaka Usami, Yasuyoshi Kurokawa

    Japan-Korea PV Joint Student Seminar 

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    Event date: 2019.2

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  81. Influence of Light Soaking on c-Si Surface Passivation by Atomic Layer Deposited Titanium Oxide International conference

    Shinsuke Miyagawa, Takeya Mochizuki, Kazuhiro Gotoh, Yasuyoshi Kurokawa, and Noritaka Usami

    Japan-Korea PV Joint Student Seminar 

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    Event date: 2019.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  82. Explorative Studies of Novel Structures as Carrier Selective Contacts International conference

    Ryohei Tsubata, Yuta Nakagawa, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami

    Japan-Korea PV Joint Student Seminar 

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    Event date: 2019.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  83. Passivation Performance of Crystalline Silicon Solar Cells Employing Stacks of Ultrathin Oxide and Polycrystalline Si Formed by Aluminum Induced Crystallization International conference

    Yuqing Li, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami

    Japan-Korea PV Joint Student Seminar 

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    Event date: 2019.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  84. BaSi2: Novel Si-Based Material for High Efficiency Thin Film Solar Cells International conference

    Yuki Kimura, Takamasa Yoshino, Michinobu Fujiwara, Yoshihiko Nakagawa, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami

    Japan-Korea PV Joint Student Seminar 

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    Event date: 2019.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  85. Formation of Light-trapping Structure using Ge Islands Grown by Gas-source Molecular Beam Epitaxy as Etching Masks on a Si Thin Substrate International conference

    Yushi Ota, Dmitry Yurasov, Alexey Novikov, Mikhail Shaleev, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami

    Japan-Korea PV Joint Student Seminar 

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    Event date: 2019.2

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  86. Thin PEDOT:PSS: An Excellent Passivation Material International conference

    Van Hoang Nguyen, Shinya Kato, Kazuhiro Gotoh, Yasuyoshi Kurokawa, and Noritaka Usami

    Japan-Korea PV Joint Student Seminar 

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    Event date: 2019.2

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  87. ヘテロ接合の高性能化メカニズムと太陽電池応用 Invited

    後藤 和泰

    学振175委員会 次世代シリコン太陽電池分科会第10回研究会 

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    Event date: 2019.2

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  88. シリコン酸化膜を用いたシリコン量子ドット積層構造における構造・電気的特性評価

    赤石 龍士郎, 北沢 宏平, 後藤 和泰, 加藤 慎也, 宇佐美 徳隆, 黒川 康良

    第3回フロンティア太陽電池セミナー 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  89. 超薄膜TiOx/結晶Si界面における酸素・水素原子の挙動

    望月健矢,後藤和泰,黒川康良,山本剛久,宇佐美徳隆

    第12回 物性科学領域横断研究会 

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    Event date: 2018.11 - 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  90. Effect of slow-speed evaporation of BaSi2 on the performance of p-type BaSi2/n-type crystalline Si solar cells International conference

    Michinobu Fujiwara, Kazuma Takahashi, Yoshihiko Nakagawa, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami

    Material Research Society 2018 Fall Meeting 

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    Event date: 2018.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  91. Epitaxial growth of SiGe on Si substrate by printing and firing of Al-Ge mixed paste International conference

    Shogo Fukami, Yoshihiko Nakagawa, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Masahiro Nakahara, Marwan Dhamrin, Noritaka Usami

    Material Research Society 2018 Fall Meeting 

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    Event date: 2018.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  92. ポストアニール温度によるBaSi2薄膜のキャリア密度への影響

    木村 裕希, 藤原 道信, 中川 慶彦, 後藤 和泰, 黒川 康良, 宇佐美 徳隆

    第6回応用物理学会 名古屋大学スチューデントチャプター東海地区学術講演会 

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    Event date: 2018.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  93. Degradation of passivation performance of crystalline silicon solar cells employing stacksof ultrathin oxide and polycrystalline Si formed by aluminum induced crystallization

    Yuqing Li, Kazuhiro Gotoh, Takeya Mochizuki, Yasuyoshi Kurokawa, Noritaka Usami

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    Event date: 2018.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  94. Local analysis of TiOx/SiOx stack with excellent electrical properties for carrier selective contact International conference

    Takeya Mochizuki, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Takahisa Yamamoto, Noritaka Usami

    The Forum on the Science and Technology of Silicon Materials 2018 

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    Event date: 2018.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  95. Influence of illumination during ITO sputtering on passivation performance at a-Si:H/c-Si interface International conference

    Masanori Semma, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Noritaka Usami

    The 7th Korea-Japan Joint Seminar on PV 

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    Event date: 2018.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  96. Transparent conductive Nb doped titanium oxide thin film deposited under low temperature by RF magnetron sputtering International conference

    Xuemei Cheng, Kazuhiro Gotoh, Hyunju Lee and Noritaka Usami

    14th China SoG Silicon and PV Power Conference 

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    Event date: 2018.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:China  

  97. Enhancing conductivity of PEDOT:PSS thin film for fabrication of c-Si solar cell International conference

    Hoang Van Nguyen, Shinya Kato, Kazyhiro Goto, Yasuyoshi Kurokawa

    Emerging Material Technologies Summit 

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    Event date: 2018.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Viet Nam  

  98. Geドットマスクを用いた光閉じ込め構造の作製とa-Si:Hパッシベーション:Ge成長温度の効果

    太田 湧士,後藤 和泰,黒川 康良,宇佐美 徳隆 Dmitrij Yurasov, Alexey Novikov, Mikhail Shaleev

    第79回応用物理学会秋季学術講演会 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  99. シリコン酸化膜を用いたシリコン量子ドット積層構造における構造・電気的特性評価

    赤石 龍士郎, 北沢 宏平, 後藤 和泰, 加藤 慎也, 宇佐美 徳隆, 黒川 康良

    第79回応用物理学会秋季学術講演会 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  100. ITO製膜時の光照射がa-Si:H/c-Si界面におけるパッシベーション性能に及ぼす影響

    扇間政典,後藤和泰,黒川康良,山本剛久,宇佐美徳隆

    第79回応用物理学会秋季学術講演会 

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  101. 電子エネルギー損失分光法を用いた高パッシベーション性能TiOx/SiOxヘテロ界面の局所構造の解明

    望月健矢,後藤和泰,黒川康良,山本剛久,宇佐美徳隆

    第79回応用物理学会秋季学術講演会 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  102. p型BaSi2/n型結晶Siヘテロ接合形成におけるBaSi2低速蒸着の効果 International conference

    藤原 道信,高橋 一真,中川 慶彦,後藤 和泰,黒川 康良,伊藤 孝至,宇佐美 徳隆

    第79回応用物理学会秋季学術講演会 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  103. 不活性ガス雰囲気下での熱処理を用いたMg2Si薄膜の合成と膜質評価

    堀場 一成, 藤原 道信, 中川 慶彦, 後藤 和泰, 黒川 康良, 伊藤 孝至, 宇佐美 徳隆

    第79回応用物理学会秋季学術講演会 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  104. 印刷と焼成によるSi基板上へのSiGe層のエピタキシャル成長における熱処理条件の効果 International conference

    深見 昌吾、中川 慶彦、後藤 和泰、黒川 康良、中原 正博、ダムリン マルワン、宇佐美 徳隆

    第79回応用物理学会秋季学術講演会 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  105. Low temperature processed high conductive Nb doped titanium oxide thin film deposited by RF magnetron sputtering

    Xuemei Cheng, Kazuhiro Gotoh and Noritaka Usami

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    Event date: 2018.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  106. Conductivity enhancement of PEDOT:PSS thin film for ITO-free hybrid c-Si solar cell

    Hoang Van Nguyen,Shinya Kato,Kazuhiro Goto,Yasuyoshi Kurokawa,Noritaka Usami

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  107. 真空蒸着法による透明導電膜上へのBaSi2 薄膜作製と評価

    中川 慶彦, 望月 健矢,後藤 和泰, 黒川 康良, 宇佐美 徳隆

    第79回応用物理学会秋季学術講演会 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  108. Stacks of a-SiOx:H/a-Si:H Passivation Layer for Low Parasitic Absorption and High Passivation in Silicon Heterojunction Solar Cells International conference

    K. Gotoh, M, Cui, R. Akaishi, Y. Kurokawa, and N. Usami

    35th European Photovoltaic Solar Energy Conference and Exhibition 

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    Event date: 2018.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  109. SiOxを障壁層としたSi量子ドット太陽電池構造作製のためのTiO2:NbによるP拡散抑制

    北沢宏平, 赤石龍士郎, 小野聖, 加藤慎也, 後藤和泰, 宇佐美徳隆, 黒川康良

    第15回「次世代の太陽光発電システム」シンポジウム 

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    Event date: 2018.7

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  110. Controllable optical and electrical properties of Nb doped TiO2 films by RF sputtering International conference

    X. Cheng, K. Gotoh, T. Mochizuki and N. Usami

    the 7th World Conference on Photovoltaic EnergyConversion (WCPEC-7) 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  111. Local structure of high performance TiOx passivating layer revealed by electron energy loss spectroscopy International conference

    T. Mochizuki, K. Gotoh, A. Ohta, Y. Kurokawa, S. Miyazaki, T. Yamamoto, N. Usami

    the 7th World Conference on Photovoltaic EnergyConversion (WCPEC-7) 

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    Event date: 2018.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  112. Deposition and Characterization of Si Quantum Dot Multilayers Prepared by Plasma Enhanced Chemical Vapor Deposition using SiH4 and CO2 Gases International conference

    R. Akaishi, K Kitazawa, . Ono, K. Gotoh, E. Ichihara, S. Kato, N. Usami and Y. Kurokawa

    the 7th World Conference on Photovoltaic EnergyConversion (WCPEC-7) 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  113. Development of the Passivation Layer for p-type CuI Thin Film Fabricated by the 2-step Method as the Novel Hole Selective Contact of Silicon Heterojunction Solar Cells International conference

    M. Cui, K. Gotoh, Y. Kurokawa and N. Usami

    the 7th World Conference on Photovoltaic EnergyConversion (WCPEC-7) 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  114. Improving intrinsic silicon nanoparticle film by press treatment for use in pin solar cells International conference

    Eiji Ichihara, Shinya Kato, Ryushiro Akaishi, Kazuhiro Gotoh, Yasuyoshi Kurokawa, Naoki Kishi, Tetsuo Soga

    the 7th World Conference on Photovoltaic EnergyConversion (WCPEC-7) 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  115. Application of light-trapping structure using Ge dot mask by alkaline etching to heterojunction solar cell International conference

    Atsushi Hombe, Yasuyoshi Kurokawa, Kazuhiro Gotoh, Noritaka Usami

    the 7th World Conference on Photovoltaic EnergyConversion (WCPEC-7) 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  116. Nb-doped TiO2 for silicon quantum dot solar cells as a carrier selective contact layer International conference

    Y. Kurokawa, K. Kitazawa, R. Akaishi, S. Ono, K. Gotoh, and N. Usami

    10th International Workshop on Crystalline Silicon for Solar Cells 

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    Event date: 2018.4

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  117. Characterization of hydrogen around a-Si:H/c-Si interface by resonance nuclear reaction analysis International conference

    K. Gotoh, S. Ogura, S. Kato, Y. Kurokawa, K. Fukutani, and N. Usami

    10th International Workshop on Crystalline Silicon for Solar Cells 

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    Event date: 2018.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  118. Impact of interlayers on thermal stability of TiOx passivating layer deposited by atomic layer deposition International conference

    T. Mochizuki, K. Gotoh, Y. Kurokawa, and N. Usami

    10th International Workshop on Crystalline Silicon for Solar Cells 

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    Event date: 2018.4

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  119. Investigation on the thermal stability of p-type CuI as hole selective contact for the silicon heterojunction solar cells International conference

    Min Cui, K. Gotoh, Y. Kurokawa, and N. Usami

    10th International Workshop on Crystalline Silicon for Solar Cells 

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    Event date: 2018.4

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  120. Surface Passivation Property of Ultra-thin Titanium Oxide/Aluminum Oxide stacks for Silicon Based Selective Contact International conference

    Xuemei Cheng, K. Gotoh, R. Nezasa, T. Mochizuki, and N. Usami

    10th International Workshop on Crystalline Silicon for Solar Cells 

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    Event date: 2018.4

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  121. Surface passivation quality of atomic layer deposited TiO2 thin layer for carrier selective contact on crystalline silicon International conference

    T. Mochizuki, K. Gotoh, I. Takahashi, Y. Kurokawa, N. Usami

    2017 MRS Fall meeting 

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    Event date: 2017.11 - 2017.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Boston (USA)   Country:United States  

  122. Effect of sputtered a-Si on effective carrier lifetime of c-Si with ultra-thin SiO2 structure International conference

    K. Gotoh, I. Takahashi, Y. Kurokawa, N. Usami

    EUPVSEC 2017 

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    Event date: 2017.9

    Language:English   Presentation type:Poster presentation  

    Country:Netherlands  

  123. Fabrication of CuI/a-Si:H/c-Si Structure for Application to Hole-selective Contacts of Heterojunction Si Solar Cells International conference

    K. Gotoh, M. Cui, N. C. Thanh, K. Koyama, I. Takahashi, Y. Kurokawa, H. Matsumura, N. Usami

    44th IEEE PVSC Conference 

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    Event date: 2017.6

    Language:English   Presentation type:Poster presentation  

    Venue:Washington D.C. (USA)   Country:United States  

  124. Solar Cells Application of p-type poly-Si Thin Film by Aluminum Induced Crystallization International conference

    S. Masuda, K. Gotoh, I. Takahashi, K. Nakamura, Y. Oshita, Y. Kurokawa, N. Usami

    44th IEEE PVSC Conference 

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    Event date: 2017.6

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  125. Development of spin-coated copper iodide film on silicon for use in hole-selective contacts International conference

    K. Gotoh, M. Cui, I. Takahashi, Y. Kurokawa, N. Usami

    Silicon PV 2017 

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    Event date: 2017.4

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  126. Fabrication of strain-compensated heterojunction Ge/Si1-xCx quantum dots solar cells International conference

    K. Gotoh, R. Oshima, T. Sugaya, T. Tayagaki, K. Matsubara, M. Kondo

    EUPVSEC 2016 

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    Event date: 2016.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Germany  

  127. Studies on highly stacked Ge/Si quantum dot heterojunction solar cells grown up to 100 stacked layers International conference

    K. Gotoh, R. Oshima, T. Sugaya, I. Sakata, K. Matsubara, M. Kondo

    PVSEC 2015 

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    Event date: 2015.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Pusan (South Korea)   Country:Korea, Republic of  

  128. Strain-compensated Ge/Si1-xCx quantum dots with Si mediating layers grown by molecular beam epitaxy International conference

    K. Gotoh, R. Oshima, T. Sugaya, I. Sakata, K. Matsubara, M. Kondo

    MBE 2014 

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    Event date: 2014.9

    Language:English   Presentation type:Poster presentation  

    Venue:Flagstaff (USA)   Country:United States  

  129. Fabrication of type-II self-assembled Ge/Si quantum dots for use in high efficiency solar cells International conference

    K. Gotoh, R. Oshima, T. Sugaya, I. Sakata, K. Matsubara, M. Kondo

    Japanese-German Students Symposium on Material Science 

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    Event date: 2014.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Magdeburg (Germany)   Country:Germany  

  130. Fabrication of Type-II Self-Assembled Ge/Si Quantum Dots for High Efficiency Solar Cells International conference

    K. Gotoh, R. Oshima, T. Sugaya, I. Sakata, K. Matsubara, M. Kondo

    EUPVSEC 2013 

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    Event date: 2013.9 - 2013.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  131. Effect of deposition rate on the characteristics of Ge quantum dots on Si(100) substrate International conference

    K. Gotoh, R. Oshima, T. Sugaya, I. Sakata, K. Matsubara, M. Kondo

    ICSI-8 

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    Event date: 2013.6

    Language:English   Presentation type:Poster presentation  

    Venue:Fukuoka (Japan)   Country:Japan  

  132. Optical and structural studies on highly uniform Ge quantum dots on Si(001) substrate by solid source molecular beam epitaxy International conference

    K. Gotoh, R. Oshima, T. Sugaya, I. Sakata, K. Matsubara, M. Kondo

    MBE2012 

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    Event date: 2012.9

    Language:English   Presentation type:Poster presentation  

    Venue:Nara (Japan)   Country:Japan  

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Research Project for Joint Research, Competitive Funding, etc. 4

  1. 従来にない高効率、低コスト、高耐久性を兼ね備えた太陽電池を実現する要素技術開発

    Grant number:20332524  2020.12 - 2024.2

    クリーンエネルギー分野における革新的技術の国際共同研究開発事業 

    松井 卓矢

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    Authorship:Coinvestigator(s)  Grant type:Competitive

    Grant amount:\26398000 ( Direct Cost: \22958000 、 Indirect Cost:\3440000 )

  2. 超高効率モジュール技術開発/超高効率多段接合モジュール開発

    Grant number:P20015  2020.7 - 2023.2

    太陽光発電主力電源化推進技術開 

    宇佐美徳隆、黒川康良、後藤和泰

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    Authorship:Coinvestigator(s)  Grant type:Competitive

    Grant amount:\30000000 ( Direct Cost: \2696000 、 Indirect Cost:\3912000 )

  3. 酸化チタン薄膜と結晶シリコンとの界面における未結合手不活化における水素機 能の解明

    Grant number:C047  2019.5 - 2021.3

    MALT共同利用 

  4. 結晶シリコン界面の未結合手不活性化における水素機能の解明

    Grant number:18K0093  2018.4 - 2019.3

    平成30年度東北大学金属材料研究所共同研究 

    後藤 和泰

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    Grant type:Competitive

    Grant amount:\300000 ( Direct Cost: \300000 )

KAKENHI (Grants-in-Aid for Scientific Research) 4

  1. Phase Transformation Science of Chiral Crystal Created by Pasteur Optical Tweezers

    Grant number:20H02686  2020.4 - 2023.3

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    Authorship:Coinvestigator(s)  Grant type:Competitive

  2. Development of conductive passivation layer using silicon nanocrystals

    Grant number:20K15127  2020.4 - 2023.3

    Grant-in-Aid for Early-Career Scientists

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    Authorship:Principal investigator 

    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

  3. Development of conductive passivation layer using silicon nanocrystals

    Grant number:19K21110  2019.4 - 2020.3

    Gotoh Kazuhiro

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    Authorship:Principal investigator 

    Grant amount:\2990000 ( Direct Cost: \2300000 、 Indirect Cost:\690000 )

    In this study, we aim to develop silicon-nanocrystals-embedded silicon oxide passivating layers. The silicon oxide passivating layers including silicon nanocrystals are prepared on crystalline silicon (c-Si) substrates by sandwitching silicon-rich amorphous silicon oxide (a-SiOx) in between oxygen-rich silicon oxide (a-SiOy) and subsequent annealing. The a-SiOy layer can suppress epitaxial growth of the a-SiOx layers and thus higher passivation performance is obtained in comparison with the passivating layers without the a-SiOy. Furthermore, the electrical conductivity increases with annealing temperature. The Si nanocrystals in the silicon oxide passivating layer increase with annealing temperature. These results suggest that the silicon nanocrystals work as a carrier path, indicating the silicon oxide exhibiting good passivation performance and conductivity is successfully fabricated.

  4. 歪み補償系積層ゲルマニウム量 子ドットの開発と超高効率太陽電池への応用

    2014.4 - 2016.3

    科学研究費補助金 

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    Authorship:Principal investigator 

    本研究は,太陽電池応用のための歪み補償系積層ゲルマニウム量子ドットの開発を目的として行われた.積層量子ドットを用いた太陽電池は,膜厚の薄いスペーサー層を用いることによりキャリアの輸送特性の向上が期待できる.しかし,スペーサー層の薄膜化は,量子ドット層で生じる歪みの伝搬・蓄積を増大させ,積層欠陥の発生により結晶品質が悪化する.炭素を添加したシリコン(Si1-xCx)層は歪み補償層として作用し,量子ドットサイズの増大を抑制することが期待できる.そこで、Si1-xCx歪み補償層の開発とSi1-xCx母材を用いた積層ゲルマニウム(Ge)量子ドットの開発に取り組み、太陽電池応用に有利である高均一かつ高密度な積層Ge/Si0.9995C0.0005量子ドットの作製を達成した。さらに,積層Ge/Si1-xCx量子ドット太陽電池の作製,および量子ドット間隔が太陽電池に及ぼす影響を調査も行った。電圧を印加させながら量子効率を評価することで、通常のGe/Si太陽電池と比較してGe/Si0.9995C0.0005太陽電池ではGe/Si0.9995C0.0005太陽電池ではキャリアの収集が改善していることを見出すことができた。

Industrial property rights 1

  1. 導電性保護膜および太陽電池

    後藤和泰,津幡亮平,宇佐美徳隆

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    Applicant:国立大学法人名古屋大学

    Application no:特願2020-061178  Date applied:2020.3

    Country of applicant:Domestic  

 

Teaching Experience (On-campus) 31

  1. Seminars on Materials Creation Engineering 2E

    2021

  2. Seminars on Materials Creation Engineering 2D

    2021

  3. Seminars on Materials Creation Engineering 2C

    2021

  4. Seminars on Materials Creation Engineering 2B

    2021

  5. Seminars on Materials Creation Engineering 2A

    2021

  6. 卒業研究B

    2021

  7. 卒業研究A

    2021

  8. マテリアル工学概論

    2021

  9. 学生実験2

    2021

  10. 学生実験1

    2021

  11. 物質創製工学特別実験及び演習2

    2020

  12. 物質創製工学セミナー2A

    2020

  13. 物質創製工学セミナー2B

    2020

  14. 物質創製工学セミナー2C

    2020

  15. 物質創製工学セミナー2D

    2020

  16. 物質創製工学セミナー2E

    2020

  17. 物質創製工学特別実験及び演習1

    2020

  18. 物質創製工学セミナー1C

    2020

  19. 物質創製工学セミナー1D

    2020

  20. 物質創製工学セミナー1B

    2020

  21. 物質創製工学セミナー1A

    2020

  22. 卒業研究A

    2020

  23. 卒業研究B

    2020

  24. マテリアル工学概論

    2020

  25. 学生実験2

    2020

  26. 学生実験1

    2020

  27. 学生実験2

    2019

  28. 学生実験1

    2019

  29. マテリアル工学概論

    2019

  30. 材料工学実験及び演習2

    2018

  31. 材料工学実験及び演習1

    2018

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Social Contribution 6

  1. RENEWABLE ENERGY 2022

    Role(s):Appearance, Planner

    2022.1

  2. 名古屋大学工学部テクノサイエンスセミナー(TSS)

    Role(s):Planner

    2019.8

  3. PVJapan 2019

    Role(s):Informant

    2019.7

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    Audience: Researchesrs, General, Scientific, Civic organization, Governmental agency

    Type:Other

  4. PV Japan2018

    Role(s):Informant

    2018.6

  5. PV Japan2017

    Role(s):Informant

    2017.7

  6. PV Japan2016

    Role(s):Informant

    2016.6 - 2016.7

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Media Coverage 4

  1. 結晶シリコン太陽電池の高性能化を実現、名古屋大学が新材料 Internet

    スマートジャパン  スマートジャパン  2019.1

  2. 名大、シリコン太陽電池で新材料、高効率化に期待 Internet

    日経XTECH  日経XTECH  2019.1

  3. 太陽電池の変換効率、酸化チタンで向上へ Newspaper, magazine

    日経新聞  日経新聞  2019.1

  4. 太陽光発電の普及に期待!~太陽電池の高性能化に有用な新材料の開発~

    名古屋大学  2018.12

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    Author:Myself 

Academic Activities 4

  1. 第18回次世代の太陽光発電システムシンポジウム 座長

    Role(s):Panel moderator, session chair, etc.

    日本太陽光発電学会  2021.10

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    Type:Competition, symposium, etc. 

  2. International Conference on Solid State Devices and Materials 2021 座長 International contribution

    Role(s):Panel moderator, session chair, etc.

    2021.9

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    Type:Academic society, research group, etc. 

  3. 第17回次世代の太陽光発電システムシンポジウム実行委員会Web担当

    Role(s):Planning, management, etc.

    日本太陽光発電学会  2020.10

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    Type:Competition, symposium, etc. 

  4. 応用物理学会若手チャプター 太陽光エネルギー変換機能材料・デバイス開発研究会

    Role(s):Planning, management, etc.

    2018.1

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    Type:Academic society, research group, etc.