Faculty Profiles - MATSUO Yutaka

Papers - MATSUO Yutaka

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Star-shaped magnesium tetraethynylporphyrin bearing four peripheral electron-accepting diketopyrrolopyrrole functionalities for organic solar cells Reviewed

Wang Huan, Yue Qihui, Nakagawa Takafumi, Zieleniewska Anna, Okada Hiroshi, Ogumi Keisuke, Ueno Hiroshi, Guldi Dirk M., Zhu Xiaozhang, Matsuo Yutaka

JOURNAL OF MATERIALS CHEMISTRY A Vol. 7 ( 8 ) page： 4072 - 4083 2019.2

Reduced Knoevenagel Reaction of Acetetracenylene-1,2-dione with Acceptor Units for Luminescent Tetracene Derivatives Reviewed International coauthorship

Yutaka Matsuo, Chu-Guo Yu, Takafumi Nakagawa, Hiroshi Okada, Hiroshi Ueno, Tian-Ge Sun, Yu-Wu Zhong

The Journal of Organic Chemistry Vol. 84 ( 4 ) page： 2339 - 2345 2019.2

Polarity engineering of porous aromatic frameworks for specific water contaminant capture Reviewed

Xiaoshan Shen, Muhammad Faheem, Yutaka Matsuo, Saba Aziz, Xu Zhang, Yuhan Li, Jian Song, Yuyang Tian, Guangshan Zhu

Journal of Materials Chemistry A Vol. 7 ( 6 ) page： 2507 - 2512 2019.2

Formation of Environmentally Stable Hole-doped Graphene Films with Instantaneous and High-density Carrier Doping via a Boron-based Oxidant Reviewed

Kaito Kanahashi, Naoki Tanaka, Yoshiaki Shoji, Mina Maruyama, Il Jeon, Kenji Kawahara, Masatou Ishihara, Masataka Hasegawa, Hiromichi Ohta, Hiroki Ago, Yutaka Matsuo, Susumu Okada, Takanori Fukushima, Taishi Takenobu

NPJ 2D MATERIALS AND APPLICATIONS Vol. 3 ( 1 ) page： 7 2019.2

High-Working-Pressure Sputtering of ZnO for Stable and Efficient Perovskite Solar Cells Reviewed International coauthorship

Abhishek Thote, Il Jeon, Hao-Sheng Lin, Sergei Manzhos, Takafumi Nakagawa, Donguk Suh, Junho Hwang, Makoto Kashiwagi, Junichiro Shiomi, Shigeo Maruyama, Hirofumi Daiguji, Yutaka Matsuo

ACS Applied Electronic Materials Vol. 1 page： 389 - 396 2019.2

Vapor-Assisted Ex-Situ Doping of Carbon Nanotube towards Efficient and Stable Perovskite Solar Cells Reviewed International coauthorship

Jin-Wook Lee, Il Jeon, Hao-Sheng Lin, Seungju Seo, Tae-Hee Han, Anton Anisimov, Esko I. Kauppinen, Yutaka Matsuo, Shigeo Maruyama, Yang Yang

Nano Letters Vol. 19 page： 2223 - 2230 2019.1

Investigation for Energy Levels of an Organic Thin-film Semiconductor by Photoemission Yield Spectroscopy in Air Reviewed

Ogumi Keisuke, Fujimaki Yasuto, Nakagawa Takafumi, Matsuo Yutaka

BUNSEKI KAGAKU Vol. 67 ( 11 ) page： 647 - 651 2018.11

Magnesium Tetra(phenylethynyl)porphyrin: Stepwise Synthetic Route, Crystal Structures, and Longer Singlet Excited-State Lifetime than Zinc Congener Reviewed

Takafumi Nakagawa, Huan Wang, Anna Zieleniewska, Hiroshi Okada, Shinobu Aoyagi, Dirk M. Guldi, Yutaka Matsuo

Chemistry - An Asian Journal Vol. 13 ( 20 ) page： 3032 - 3039 2018.10

Functionalization of [60]fullerene through fullerene cation intermediates Reviewed

Hao-Sheng Lin, Yutaka Matsuo

Chemical Communications Vol. 54 ( 80 ) page： 11244 - 11259 2018.10

Achieving High Efficiency in Solution-Processed Perovskite Solar Cells Using C60/C70 Mixed Fullerenes Reviewed International coauthorship

Lin H.-S, Jeon I, Xiang R, Seo S, Lee J.-W, Li C, Pal A, Manzhos S, Goorsky M.S, Yang Y, Maruyama S, Matsuo Y

ACS Applied Materials and Interfaces Vol. 10 ( 46 ) page： 39590 - 39598 2018.9

Octaalkoxyfullerenes: Widely LUMO-Tunable C2v-Symmetric Fullerene Derivatives Reviewed

Hiroshi Ueno, Kouya Uchiyama, Yue Ma, Keita Watanabe, Kenji Yoza, Yutaka Matsuo, Hiroshi Moriyama

The Journal of Organic Chemistry Vol. 83 ( 17 ) page： 10655 - 10659 2018.9

Enhanced Electrical Conduction in Anatase TaON via Soft Chemical Lithium Insertion toward Electronics Application Reviewed

Atsushi Suzuki, Yasushi Hirose, Takafumi Nakagawa, Satoshi Fujiwara, Shoichiro Nakao, Yutaka Matsuo, Isao Harayama, Daiichiro Sekiba, Tetsuya Hasegawa

ACS Applied Nano Materials Vol. 1 ( 8 ) page： 3981 - 3985 2018.8

Electronic structure and cohesive energy of silylmethyl fullerene and methanoindene fullerene solids Reviewed

Furutani Sho, Matsuo Yutaka, Okada Susumu

Japanese Journal of Applied Physics Vol. 57 ( 8 ) 2018.8

Structure of [60]fullerene with a mobile lithium cation inside Reviewed

Aoyagi Shinobu, Miwa Kazuhira, Ueno Hiroshi, Okada Hiroshi, Matsuo Yutaka, Kokubo Ken

ROYAL SOCIETY OPEN SCIENCE Vol. 5 ( 7 ) 2018.7

Polymeric Acid-doped Transparent Carbon Nanotube Electrodes in Organic Solar Cells with the Longest Doping Durability Reviewed International coauthorship

Il Jeon, Clement Delacou, Hiroshi Okada, Graham E. Morse, Tae-Hee Han, Yuta Sato, Anton Anisimov, Kazu Suenaga, Esko I. Kauppinen, Shigeo Maruyama, Yutaka Matsuo

Journal of Materials Chemistry A Vol. 6 ( 30 ) page： 14553 - 14559 2018.6

Fullerene-Cation-Mediated Noble-Metal-Free Direct Introduction of Functionalized Aryl Groups onto [60]Fullerene Reviewed

Xiao-Yu Yang, Hao-Sheng Lin, Il Jeon, Yutaka Matsuo

Organic Letters Vol. 20 ( 11 ) page： 3372 - 3376 2018.6

Language：English Publishing type：Research paper (scientific journal) Publisher：American Chemical Society

Aryl[60]fullerenyl cations (ArC60 +), which were generated by heating aryl[60]fullerenyl dimers (ArC60-C60Ar) to generate aryl[60]fullerenyl radicals (ArC60 •) followed by oxidation using Cu(II) salts (Cu(BF4)2(aq)), were reacted with various functionalized aryl boronic acids to produce functionalized 1,4-diaryl[60]fullerenes. This protocol tolerated various functional groups, such as OH, NH2, COCH3, and Cl substituents, with yields reaching 93%. C60Ar1Ar2 (Ar2 = p-NH2C6H4) was used as a dopant in a photoactive CH3NH3PbI3 layer of a perovskite solar cell.

DOI： 10.1021/acs.orglett.8b01295

Lithium-Ion Endohedral Fullerene (Li+@C-60) Dopants in Stable Perovskite Solar Cells Induce Instant Doping and Anti-Oxidation

Jeon Il, Ueno Hiroshi, Seo Seungju, Aitola Kerttu, Nishikubo Ryosuke, Saeki Akinori, Okada Hiroshi, Boschloo Gerrit, Maruyama Shigeo, Matsuo Yutaka

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 57 ( 17 ) page： 4607 - 4611 2018.4

Engineering High-performance and Air-stable PBTZT-stat-BDTT-8:PC61BM/PC71BM Organic Solar Cells Reviewed International coauthorship

Il Jeon, Ryohei Sakai, Seungju Seo, Graham E. Morse, Hiroshi Ueno, Takafumi Nakagawa, Yang Qian, Shigeo Maruyama, Yutaka Matsuo

Journal of Materials Chemistry A Vol. 6 ( 14 ) page： 5746 - 5751 2018.4

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：Royal Society of Chemistry

High-performance air-stable PBTZT-stat-BDTT-8 organic solar cells were fabricated using mixed C60/C70 fullerene acceptors. Normal-architecture devices using PBTZT-stat-BDTT-8 with PC71BM produced a power conversion efficiency (PCE) of 9.38%. An inverted-architecture, which possesses higher stability, was fabricated using a more economical PC61BM and PC71BM mixture with solution-processed PEDOT:PSS on top and produced a PCE of 8.15%. Exploiting the viscous nature of PBTZT-stat-BDTT-8, the slow evaporation effect was utilised to achieve an even higher efficiency of 8.73%. A stability test was conducted under operating conditions and our devices showed remarkably higher stability compared with PTB7-based devices.

DOI： 10.1039/c7ta11095b

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Anthracene-Based Organic Small-Molecule Electron-Injecting Material for Inverted Organic Light-Emitting Diodes Reviewed

Yutaka Matsuo, Hiroshi Okada, Yasuhiro Kondo, Il Jeon, Huan Wang, Yun Yu, Takeshi Matsushita, Motoki Yanai, Toshiaki Ikuta

ACS Applied Materials and Interfaces Vol. 10 ( 14 ) page： 11810 - 11817 2018.4

Language：English Publishing type：Research paper (scientific journal) Publisher：American Chemical Society

A diphenylanthracene dimethylamine derivative (9-{3,5-di(N,N-dimethylaminoethoxy)phenyl}-10-phenyl-anthracene, DPAMA) was synthesized by the Suzuki-Miyaura cross-coupling reaction. Its ammonium salt, 9-{3,5-di(trimethylammonium ethoxy)phenyl}-10-phenyl-anthracene dichloride (DPAMA-Cl), was also synthesized as a reference material. DPAMA was characterized by UV-vis and fluorescence spectroscopy, cyclic voltammetry, photoelectron yield spectroscopy, and X-ray photoelectron spectroscopy to evaluate the work function-modifying ability of DPAMA on indium tin oxide (ITO) and ZnO. The work functions of ITO and ZnO changed from 4.4 and 4.0 eV (pristine) to 3.8 and 3.9 eV, respectively. Using this surface modification effect of DPAMA, inverted organic light-emitting diodes were fabricated with device structures of ITO/DPAMA/Alq3/NPD/MoO3/Al (Alq3 = tris(8-hydroxyquinolinato)aluminum
NPD = N,N′-di-[(1-naphthyl)-N,N′-diphenyl]-1,1′-(biphenyl)-4,4′-diamine) and ITO/ZnO/DPAMA/Alq3/NPD/MoO3/Al. Both devices showed good performance at the range of current density, 1-300 mA/cm2. The best inverted organic light-emitting diodes device showed luminance of 7720 cd/m2, current efficiency of 4.51 cd/A, and external quantum efficiency of 1.45%. Also, poly(3-hexylthiophene):mixed phenyl-C61 and C71 butyric acid methyl ester-based organic solar cells using DPAMA and DPAMA-Cl as electron-transporting materials showed power conversion efficiencies of 3.3 and 3.4%, respectively.

DOI： 10.1021/acsami.8b00603

Lithium-Ion Endohedral Fullerene (Li+@C60) Dopant in Stable Perovskite Solar Cells Inducing Anti-Oxidation Reviewed International coauthorship

Il Jeon, Hiroshi Ueno, Seungju Seo, Kerttu Aitola, Ryosuke Nishikubo, Akinori Saeki, Hiroshi Okada, Gerrit Boschloo, Shigeo Maruyama, Yutaka Matsuo

Angewandte Chemie International Edition Vol. 130 ( 17 ) page： 4697 2018.3

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Papers - MATSUO Yutaka