Rchr
J-GLOBAL ID：202401013129474203
Update date: Aug. 25, 2024
NAKAZAWA Ryotaro
ナカザワ リョウタロウ | NAKAZAWA Ryotaro
Affiliation and department：
Job title：
Postdoctoral Researcher
Research theme for competitive and other funds (2)：
- 2024 - 2026 半導体電気物性の起源: ギャップ内のppmオーダー低状態密度の定量観察と全容解明
- 2023 - 2023 X線~近紫外光の光電子分光法によるp型透明酸化物Cu2Oの電子状態評価
Papers (5)：
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Manato Tateno, Ryotaro Nakazawa, Masahiro Ohara, Hisao Ishii. The Electronic Structure and Tunneling Process of Carbon Nanotubes Observed Using High-sensitivity Ultraviolet Photoelectron Spectroscopy and Field Emission Spectroscopy. e-Journal of Surface Science and Nanotechnology. 2024
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Ryotaro Nakazawa, Atsushi Matsuzaki, Kohei Shimizu, Ikuko Nakamura, Emi Kawashima, Seiji Makita, Kiyohisa Tanaka, Satoshi Yasuno, Haruki Sato, Hiroyuki Yoshida, et al. Reliable measurement of the density of states including occupied in-gap states of an amorphous In-Ga-Zn-O thin film via photoemission spectroscopies: Direct observation of light-induced in-gap states. Journal of Applied Physics. 2024
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Kohei Shimizu, Hiroshi Tokairin, Ryotaro Nakazawa, Ikuko Nakamura, Satoshi Yasuno, Keitaro Ikegami, Yuki Yamaguchi, Yuya Tanaka, Hisao Ishii. Study of the effect of density of states distribution on carrier injection at organic/electrode interface through high-sensitivity photoemission spectroscopy and injection simulation. Applied Physics Express. 2022
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Ryotaro Nakazawa, Kenta Watanabe, Yuya Tanaka, Hisao Ishii. Direct Observation and Evaluation of In-gap States of Inorganic and Organic Semiconductors via High-sensitivity UV Photoelectron Spectroscopy. IEICE Technical Report. 2022. 122. 9. 51-56
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Ryotaro Nakazawa, Atsushi Matsuzaki, Kohei Shimizu, Emi Kawashima, Mojtaba Abdi-Jalebi, Samuel D. Stranks, Yuya Tanaka, Hiroshi Tokairin, Hisao Ishii. In-gap states of an amorphous In-Ga-Zn-O thin film studied via high-sensitivity ultraviolet photoemission spectroscopy using low-energy photons. Applied Physics Express. 2021
Lectures and oral presentations (8)：
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Density of States of In-gap States of Organic Semiconductors Determined by Photoemission Total and Partial Yield Spectroscopies using Low-energy Photons: Observation of the Initial Density of States, Exciton Fusions, and Negative-Polarons
(ThinFilm2024 2024)
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In-gap States of Inorganic and Organic Electronic Materials Studied by High Sensitivity UV Photoemission Spectroscopy
(MRM2023/IUMRS-ICA2023 2023)
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Direct Observation of Weak In-gap States of Cu2O and CuO Thin Films Studied via Constant Final State Yield Spectroscopy
(MRM2023/IUMRS-ICA2023 2023)
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Observation of Gap States and Excited States in Polar Organic Semiconductor Films Using Photoelectron Yield Measurement with Deep UV Light
(The 14th Japan-China Joint Symposium on Conduction and Photoconduction in Organic Solids and Related Phenomena 2023)
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Field Emission from Carbon Nanotube Deposited with an Organic Buffer Layer Studied by Using Simultaneous Field Emission and UV-Photoelectron Spectroscopies
(The 14th International Vacuum Electron Sources Conference(IVESC 2023) 2023)
ｍore...
Education (3)：
- 2021 - 2024 Chiba University Graduate School of Science and Engineering Course of Material Science
- 2020 - 2021 Chiba University Graduate School of Science and Engineering Course of Material Science
- 2016 - 2020 Chiba University Faculty of Engineering Department of Nanoscience
Work history (1)：
- 2024/04 - 現在 Institute for Molecular Science Department of Photo-Molecular Science Postdocs
Committee career (1)：
- 2021 - 有機デバイス・物性院生研究会 実行委員
Awards (1)：
- 2020 - 第10回CSJ化学フェスタ 2020 優秀ポスター発表賞 高感度紫外光電子分光による無機半導体のギャップ内準位の直接観測
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