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Employment (1)

National Institute of Advanced Industrial Science and Technology: Tsukuba, Ibaraki, JP

2021-04-01 to present
Employment
Source: Self-asserted source
Kohei Yamamoto

Works (29)

Mixed 2D-cation passivation towards improved durability of perovskite solar cells and dynamics of 2D-perovskites under light irradiation and at high temperature

Sustainable Energy & Fuels
2025 | Journal article
Contributors: Santa Mondal; Naoto Eguchi; Naoyuki Nishimura; Yoyo Hinuma; Kohei Yamamoto; Atsushi Kogo; Takurou N. Murakami; Hiroyuki Kanda
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Effects of partial shading and temperature-dependent reverse bias behaviour on degradation in perovskite photovoltaic modules

Solar Energy Materials and Solar Cells
2025-01 | Journal article
Contributors: Takeshi Tayagaki; Haruka Kobayashi; Kohei Yamamoto; Takurou N. Murakami; Masahiro Yoshita
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Controlling growth of lead halide perovskites on organic semiconductor buffer layers

Japanese Journal of Applied Physics
2024 | Journal article
Contributors: Kamikawa, Ikumi; Yamamoto, Kohei; Miyadera, Tetsuhiko; Yoshida, Yuji; Murakami, Takurou N.; Noda, Kei
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CH3NH3PbI3 deposited on rubrene/pentacene bilayer by two-step method and its photovoltaic performance

Japanese Journal of Applied Physics
2024-12-02 | Journal article
Contributors: Ikumi Kamikawa; Tetsuhiko Miyadera; Kohei Yamamoto; Yuji Yoshida; Takurou N. Murakami; Kei Noda
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Rapid oxygen plasma treatment of tin oxide layers for improving the light stability of perovskite solar cells

Japanese Journal of Applied Physics
2024-09-02 | Journal article
Contributors: Kohei Yamamoto; Yuji Yoshida; Takurou N. Murakami
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Ion-migration analysis of degradation caused by outdoor exposure and accelerated stress testing in perovskite solar cells

Solar Energy Materials and Solar Cells
2024-08 | Journal article
Contributors: Takeshi Tayagaki; Sayaka Hirooka; Haruka Kobayashi; Kohei Yamamoto; Takurou N. Murakami; Masahiro Yoshita
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Thermal stability of perovskite solar cells incorporated with spiro-OMeTAD and an ionic liquid dopant

Japanese Journal of Applied Physics
2024-01-10 | Journal article
Part of ISSN: 0021-4922
Part of ISSN: 1347-4065
Contributors: Kohei Yamamoto; Takurou Murakami
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Kohei Yamamoto
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Temperature-dependent ion migration and mobile-ion-induced degradation of perovskite solar cells under illumination

Solar Energy Materials and Solar Cells
2023 | Journal article
Contributors: Tayagaki, Takeshi; Yamamoto, Kohei; Murakami, Takurou N.; Yoshita, Masahiro
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Ultraviolet-light-dark cycle analysis of degradation in perovskite solar cells

Solar Energy Materials and Solar Cells
2023 | Journal article
Contributors: Tayagaki, Takeshi; Kobayashi, Haruka; Yamamoto, Kohei; Murakami, Takurou N.; Yoshita, Masahiro
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Ultraviolet-Light–Dark Cycle Analysis of Degradation in Perovskite Solar Cells

SSRN
2023 | Other
EID:

2-s2.0-85167957158

Part of ISSN: 15565068
Contributors: Tayagaki, T.; Kobayashi, H.; Yamamoto, K.; Murakami, T.N.; Yoshita, M.
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Kohei Yamamoto via Scopus - Elsevier

Germanium ion doping of CsPbI3 to obtain inorganic perovskite solar cells with low temperature processing

Japanese Journal of Applied Physics
2022 | Journal article
Contributors: Kogo, Atsushi; Yamamoto, Kohei; Murakami, Takurou N.
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Insights into Microscopic Crystal Growth Dynamics of CH3NH3PbI3 under a Laser Deposition Process Revealed by In Situ X-ray Diffraction

ACS Applied Materials & Interfaces
2021-05-19 | Journal article
Part of ISSN: 1944-8244
Part of ISSN: 1944-8252
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Kohei Yamamoto
grade
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Effects of optical interference and optimized crystallinity in organic photovoltaic cells with a low-bandgap small molecule fabricated by dry process

Japanese Journal of Applied Physics
2019 | Journal article
Contributors: Yamamoto, Kohei; Miyadera, Tetsuhiko; Matsuo, Yutaka; Kuwabara, Takayuki; Takahashi, Kohshin; Taima, Tetsuya; Chikamatsu, Masayuki
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Thermal Control of PbI2 Film Growth for Two-Step Planar Perovskite Solar Cells

Crystal Growth & Design
2019 | Journal article
Contributors: Shahiduzzaman, Md; Hamada, Keitaro; Yamamoto, Kohei; Nakano, Masahiro; Karakawa, Makoto; Takahashi, Kohshin; Taima, Tetsuya
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Vacuum deposition of CsPbI3 layers on textured Si for Perovskite/Si tandem solar cells

Japanese Journal of Applied Physics
2019 | Journal article
Contributors: Hamada, Keitaro; Yonezawa, Kyosuke; Yamamoto, Kohei; Taima, Tetsuya; Hayase, Shuzi; Ooyagi, Noboru; Yamamoto, Yuzo; Ohdaira, Keisuke
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Molecular orientation control of semiconducting molecules using a metal layer formed by wet processing

Organic Electronics
2018 | Journal article
Contributors: Yamamoto, Kohei; Shahiduzzaman, Md; Yamada, Akihiro; Takaya, Tomotsugu; Chikamatsu, Tatsuki; Koganezawa, Tomoyuki; Karakawa, Makoto; Kuwabara, Takayuki; Takahashi, Kohshin; Taima, Tetsuya
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Annealing effects on CsPbI3-based planar heterojunction perovskite solar cells formed by vacuum deposition method

Japanese Journal of Applied Physics
2017 | Journal article
Contributors: Yonezawa, Kyosuke; Yamamoto, Kohei; Shahiduzzaman, Md.; Furumoto, Yoshikazu; Hamada, Keitaro; Ripolles, Teresa S.; Karakawa, Makoto; Kuwabara, Takayuki; Takahashi, Kohshin; Hayase, Shuzi et al.
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Improved Reproducibility and Intercalation Control of Efficient Planar Inorganic Perovskite Solar Cells by Simple Alternate Vacuum Deposition of PbI2 and CsI

ACS Omega
2017 | Journal article
Contributors: Shahiduzzaman, Md.; Yonezawa, Kyosuke; Yamamoto, Kohei; Ripolles, Teresa S.; Karakawa, Makoto; Kuwabara, Takayuki; Takahashi, Kohshin; Hayase, Shuzi; Taima, Tetsuya
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Interfacial modification of the electron collecting layer of low-temperature solution-processed organometallic halide photovoltaic cells using an amorphous perylenediimide

Solar Energy Materials and Solar Cells
2017 | Journal article
Contributors: Adhikari, Tham; Shahiduzzaman, Md.; Yamamoto, Kohei; Lebel, Olivier; Nunzi, Jean-Michel
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Planar heterojunction perovskite solar cells fabricated by wet-process

Proceedings of SPIE - The International Society for Optical Engineering
2017 | Conference paper
Contributors: Taima, Tetsuya; Yamamoto, Kohei; Shahiduzzaman, Md.; Furumoto, Yoshikazu; Kuwabara, Takayuki; Takahashi, Kohshin
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Sexithiophene-Based Photovoltaic Cells with High Light Absorption Coefficient via Crystalline Polymorph Control

The Journal of Physical Chemistry C
2017 | Journal article
Contributors: Taima, Tetsuya; Shahiduzzaman, Md.; Ishizeki, Takaaki; Yamamoto, Kohei; Karakawa, Makoto; Kuwabara, Takayuki; Takahashi, Kohshin
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Viscosity effect of ionic liquid-assisted controlled growth of CH3NH3PbI3 nanoparticle-based planar perovskite solar cells

Organic Electronics
2017 | Journal article
Contributors: Shahiduzzaman, Md.; Yamamoto, Kohei; Furumoto, Yoshikazu; Yonezawa, Kyosuke; Hamada, Keitarou; Kuroda, Kosuke; Ninomiya, Kazuaki; Karakawa, Makoto; Kuwabara, Takayuki; Takahashi, Kenji et al.
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Degradation mechanism for planar heterojunction perovskite solar cells

Japanese Journal of Applied Physics
2016 | Journal article
Contributors: Yamamoto, Kouhei; Furumoto, Yoshikazu; Shahiduzzaman, M.; Kuwabara, Takayuki; Takahashi, Kohshin; Taima, Tetsuya
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Interpenetrating heterojunction photovoltaic cells based on C-60 nanocrystallized thin films

Organic Electronics
2016 | Journal article
Contributors: Nojiri, Kohei; Shahiduzzaman, Md; Yamamoto, Kohei; Kuwabara, Takayuki; Takahashi, Kohshin; Taima, Tetsuya
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Planar heterojunction type perovskite solar cells based on TiOx compact layer fabricated by chemical bath deposition

Proceedings of SPIE - The International Society for Optical Engineering
2016 | Conference paper
Contributors: Taima, Tetsuya; Shahiduzzaman, Md.; Yamamoto, Kohei; Furumoto, Yoshikazu; Kuwabara, Takayuki; Takahashi, Kohshin
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Shape-controlled CH3NH3PbI3 nanoparticles for planar heterojunction perovskite solar cells

Japanese Journal of Applied Physics
2016 | Journal article
Contributors: Shahiduzzaman, Md; Yamamoto, Kohei; Furumoto, Yoshikazu; Kuwabara, Takayuki; Takahashi, Kohshin; Taima, Tetsuya
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Enhanced Photovoltaic Performance of Perovskite Solar Cells via Modification of Surface Characteristics Using a Fullerene Interlayer

Chemistry Letters
2015 | Journal article
Contributors: Shahiduzzaman, Md.; Yamamoto, Kohei; Furumoto, Yoshikazu; Kuwabara, Takayuki; Takahashi, Kohshin; Taima, Tetsuya
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Ionic liquid-assisted growth of methylammonium lead iodide spherical nanoparticles by a simple spin-coating method and photovoltaic properties of perovskite solar cells

RSC Advances
2015 | Journal article
Contributors: Shahiduzzaman, M.; Yamamoto, Kohei; Furumoto, Yoshikazu; Kuwabara, Takayuki; Takahashi, Kohshin; Taima, Tetsuya
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Study of planar heterojunction perovskite photovoltaic cells using compact titanium oxide by chemical bath deposition

Japanese Journal of Applied Physics
2015 | Journal article
Contributors: Yamamoto, Kouhei; Kuwabara, Takayuki; Takahashi, Kohshin; Taima, Tetsuya
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