論文 - 小山 剛史
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Nakama, K; Okada, M; Kitaura, R; Kishida, H; Koyama, T
PHYSICAL REVIEW B 110 巻 ( 23 ) 2024年12月
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Femtosecond depolarization of photoluminescence from InAs: Comparison with Cu and monolayer graphene
Koyama, T; Fujisaki, A; Odamura, H; Nakamura, Y; Kishida, H
PHYSICAL REVIEW B 108 巻 ( 23 ) 2023年12月
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Inukai, D; Koyama, T; Kawahara, K; Ago, H; Kishida, H
PHYSICAL REVIEW B 108 巻 ( 7 ) 頁: 075408-1 - 075408-12 2023年8月
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Fermi energy dependence of ultrafast photoluminescence from graphene 査読有り 国際誌
Inukai, D; Koyama, T; Araidai, M; Kawahara, K; Ago, H; Kishida, H
JOURNAL OF APPLIED PHYSICS 132 巻 ( 13 ) 頁: 134301-1 - 134301-7 2022年10月
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Photoexcited state of the organic electron acceptor TCNQ molecular anion in the condensed state 査読有り 国際誌
Tatsuno, T; Koyama, T; Kishida, H
PHYSICAL REVIEW B 106 巻 ( 11 ) 頁: 115123-1 - 115123-7 2022年9月
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Koyama, T; Umewaki, N; Saito, K; Tatsuno, T; Fujisaki, A; Miyata, Y; Kataura, H; Kishida, H
PHYSICAL REVIEW B 106 巻 ( 4 ) 頁: 045421-1 - 045421-8 2022年7月
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Kageyama, H; Asaka, K; Kishida, H; Koyama, T
MACROMOLECULES 54 巻 ( 23 ) 頁: 11147 - 11153 2021年12月
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Suemoto, T; Yamanaka, K; Sugimoto, N; Kobayashi, Y; Otsu, T; Tani, S; Koyama, T
JOURNAL OF APPLIED PHYSICS 130 巻 ( 2 ) 頁: 025101-1 - 025101-10 2021年7月
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Saito, K; Koishi, T; Bao, JF; Norimatsu, W; Kusunoki, M; Kishida, H; Koyama, T
JOURNAL OF PHYSICAL CHEMISTRY C 125 巻 ( 20 ) 頁: 11014 - 11022 2021年5月
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Femtosecond photoluminescence from monolayer MoS<sub>2</sub>: Time-domain study on exciton diffusion 査読有り 国際誌
Saito, K; Okada, M; Kitaura, R; Kishida, H; Koyama, T
PHYSICAL REVIEW B 103 巻 ( 20 ) 頁: L201401-1 - L201401-7 2021年5月
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Inukai, D; Koyama, T; Kawahara, K; Ago, H; Kishida, H
JOURNAL OF PHYSICAL CHEMISTRY C 124 巻 ( 48 ) 頁: 26428 - 26433 2020年12月
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Effect of emissivity on ultrafast luminescence spectra in silver 査読有り 国際誌
Suemoto, T; Yamanaka, K; Sugimoto, N; Otsu, T; Tani, S; Kobayashi, Y; Koyama, T
JOURNAL OF APPLIED PHYSICS 128 巻 ( 20 ) 頁: 203103-1 - 203103-9 2020年11月
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Excitation Energy Transfer by Electron Exchange via Two-Step Electron Transfer between a Single-Walled Carbon Nanotube and Encapsulated Magnesium Porphyrin 査読有り
Koyama Takeshi*, Junpei Sugiura, Tomonari Koishi, Ryosuke Ohashi, Koji Asaka, Takeshi Saito, Yanlin Gao, Susumu Okada, Hideo Kishida
JOURNAL OF PHYSICAL CHEMISTRY C 124 巻 ( 35 ) 頁: 19406 - 19412 2020年9月
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Isolation of Single-Wired Transition-Metal Monochalcogenides by Carbon Nanotubes 査読有り
Masataka Nagata, Shivani Shukla, Yusuke Nakanishi, Zheng Liu, Yung-Chang Lin, Takuma Shiga, Yuto Nakamura, Takeshi Koyama, Hideo Kishida, Tsukasa Inoue, Naoyuki Kanda, Shun Ohno, Yuki Sakagawa, Kazu Suenaga, Hisanori Shinohara
NANO LETTERS 19 巻 ( 8 ) 頁: 4845 - 4851 2019年8月
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Imaeda, H; Koyama, T; Kishida, H; Kawahara, K; Ago, H; Sakakibara, R; Norimatsu, W; Terasawa, T; Bao, JF; Kusunoki, M
JOURNAL OF PHYSICAL CHEMISTRY C 122 巻 ( 33 ) 頁: 19273 - 19279 2018年8月
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Energetics and electronic structures of perylene confined in carbon nanotubes 査読有り
Nagasawa, Y; Koyama, T; Okada, S
ROYAL SOCIETY OPEN SCIENCE 5 巻 ( 6 ) 頁: 180359-1 - 180359-9 2018年6月
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Koyama, T; Fujiki, K; Nagasawa, Y; Okada, S; Asaka, K; Saito, Y; Kishida, H
JOURNAL OF PHYSICAL CHEMISTRY C 122 巻 ( 10 ) 頁: 5805 - 5812 2018年3月
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Sasaki, M; Koyama, T; Kishida, H; Asaka, K; Saito, Y; Yoshida, Y; Saito, G
JOURNAL OF PHYSICAL CHEMISTRY LETTERS 8 巻 ( 8 ) 頁: 1702 - 1706 2017年4月
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Hydrogen-surfactant-mediated epitaxy of Ge1-xSnx layer and its effects on crystalline quality and photoluminescence property 査読有り
Osamu Nakatsuka*, Shunsuke Fujinami, Takanori Asano, Takeshi Koyama, Masashi Kurosawa, Mitsuo Sakashita, Hideo Kishida, and Shigeaki Zaima
Japanese Journal of Applied Physics 56 巻 ( 1S ) 頁: 01AB05-1 - 01AB05-6 2017年1月
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Nakatsuka, O; Fujinami, S; Asano, T; Koyama, T; Kurosawa, M; Sakashita, M; Kishida, H; Zaima, S
JAPANESE JOURNAL OF APPLIED PHYSICS 56 巻 ( 1 ) 2017年1月