KOYAMA Masatoshi

写真a

Title

Associate Professor

Research Fields, Keywords

Semiconductor engineering, Semiconductor devices, Physics of semiconductor, Semiconductor manufacturing processes
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Graduating School 【 display / non-display 】

  • Osaka Institute of Technology   Faculty of Engineering   Department of Electrical and Electronic Systems Engineering   Others

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Graduate School 【 display / non-display 】

  • Osaka Institute of Technology  Graduate School of Engineering  Electrical and Electronic Engineering  Doctor's Course  Completed  Others

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Degree 【 display / non-display 】

  • Osaka Institute of Technology -  Doctor(Engineering)  Physics of Semiconductor, Devices

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Association Memberships 【 display / non-display 】

  • 2025.08
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    Now
     

    European Materials Research Society  FRANCE

  • 2020.08
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    The Electrochemical Society  Others

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Committee Memberships 【 display / non-display 】

  • 2024.06
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  • 2021.04
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    2023.03

     

  • 2026.06
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  • 2024.04
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  • 2018.06
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    Now

     

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Research field 【 display / non-display 】

  • Electronic materials/Electric materials

  • Physics of semiconductors

  • Semiconductor engineering

  • Optical devices

  • High Electron Mobility Transistors(HEMTs)

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Papers 【 display / non-display 】

  • High-Mobility Indium Gallium Oxide TFTs Fabricated from an Aqueous Precursor with Excimer-Light Activation

    Kazuki Ueda, Ryosuke Kasahara, Hideya Ochiai, Takuya Nomura, Akira Fujimoto, Hideo Wada, Masatoshi Koyama, Akihiko Fujii, Akihiro Shimizu, Toshihiko Maemoto  ( Multiple Authorship )

    SID Symposium Digest of Technical Papers   57   1700 - 1703   2026.09

    Research paper (international conference proceedings)  English

    DOI

  • Fabrication and Characterization of Amorphous GaOx Thin-Film UV-C Photodetectors on Quartz Glass Substrates

    Masatoshi Koyama, Shunsuke Enoki, Iori Yamasaki, Misaki Nishikawa, Akihiko Fujii, Toshihiko Maemoto  ( Multiple Authorship )

    IEICE Trans. Electronics   E-109-C ( 9 ) 333 - 340   2026.08

    Research paper (scientific journal)  English

    DOI

  • Amorphous GaOx Thin Film-Based Optoelectronic Artificial Synapses Towards Physical Reservoir Computing

    Kotaro Takanashi, Manami Miyazaki, Iori Yamasaki, Hiroaki Komatsu, Toshiya Kounoue, Masatoshi Koyama, Takashi Ikuno  ( Multiple Authorship )

    Electronic Materials   7 ( 2 ) 12   2026.06

    Research paper (scientific journal)  English

    DOI

  • Adverse Effects of Ta Addition in Au Deposition and Their Solutions

    Yudai Inagaki, Taichi Ito, Yuichiro Shindo, Takanobu Yamazaki, Masatoshi Koyama, Koji Noguchi  ( Multiple Authorship )

    CS MANTECH Digest of papers     2026.05

    Research paper (international conference proceedings)  English

  • Effect of Cationic Polymer Addition on the Tribological Performance of Electroplated Ag Coatings

    Satoshi Takamatsu, Shoei Mizuhashi, Masatsohi Koyama, Yuichiro Shindo  ( Multiple Authorship )

    CS MANTECH Digest of papers     2026.05

    Research paper (international conference proceedings)  English

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Review Papers 【 display / non-display 】

  • Deposition Process and UV Detection Properties of Gallium Oxide Thin Films Prepared by Chemical Solution Deposition

    Masatoshi Koyama, Yuki Nakano, Shunsuke Enoki, Sora Nakashima, Kazuto Koike, Akihiko Fujii, Toshihiko Maemoto  ( Joint Work )

    IEICE Technical Report ( IEICE ) ED2026   2026.10

    Introduction and explanation (scientific journal)  Japanese

  • Characterization of physical properties and UV photoresponse of amorphous GaOx thin films grown on c-plane sapphire substrates by mist CVD method

    Iori YAMASAKI Shunsuke ENOKI Misaki NISHIKAWA Masatoshi KOYAMA Akihiko FUJII Toshihiko MAEMOTO  ( Joint Work )

    IEICE Technical Report ( IEICE ) ED2025-17   2025.06

    Introduction and explanation (scientific journal)  Japanese

  • UV Detection Properties of Mist CVD Grown Amorphous Ga2O3 Thin Films

    Manami MIYAZAKI, Iori YAMASAKI, Yuma TANAKA, Masatoshi KOYAMA, Akihiko FUJII and Toshihiko MAEMOTO  ( Joint Work )

    IEICE Technical Report ( IEICE ) ED2024-17   15 - 18   2024.08

    Introduction and explanation (scientific journal)  Japanese

  • Fabrication and Characterization of Indium Oxide Thin Thin-Film Transistors using Excimer Light Assist Process

    Ryosuke KASAHARA Takeaki KOMAI Hideo WADA† Masatoshi KOYAMA Akihiko FUJII Akihiro SHIMIZU Noritaka TAKEZOE Shion YAMAGUCHI Hiroyasu ITO and Toshihiko MAEMOTO  ( Joint Work )

    IEICE Technical Report ( IEICE ) ED2024-15   8 - 11   2024.08

    Introduction and explanation (scientific journal)  Japanese

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Awards 【 display / non-display 】

  • Young Researcher Communication Award

    Asia-Pacific Workshop on Advanced Semiconductor Devices 2025  Awards of International Conference, Council and Symposium

    Country：JAPAN

  • Poster Award

    2006 Int. Meeting for Future of Electron Devices, Kansai  Awards of International Conference, Council and Symposium

    Country：JAPAN

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Presentations 【 display / non-display 】

  • Crystal Growth and Thin-Film Transistor Characteristics of ZnO Thin Films Prepared using a Complex-Assisted Basic Solution Process

    Naoki Takada, Kensuke Nakata, Ryunosuke Ohtani, Hideo Wada, Masatoshi Koyama, Akihiko Fujii, Akihiro Shimizu, Toshihiko Maemoto

    International conference  11th International Congress on Ceramics  ( Sapporo Convention Center )  Poster (general)

    2026.09
    　
    　

  • Influence of growth temperature on the structural and optical characteristics of Mist CVD grown GaOx thin films on quartz glass substrates

    Shunsuke Enoki, Misaki Nishikawa, Sora Nakashima, Masatoshi Koyama, Kazuto Koike, Akihiko Fujii, Toshihiko Maemoto

    International conference  11th International Congress on Ceramics  ( Sapporo Convention Center )  Poster (general)

    2026.09
    　
    　

  • Controlling Defects and Oxide Networks in Solution-Processed In2O3 through Atmospheric Modulation and VUV Excimer Irradiation

    Kazuki Ueda, Ryunosuke Ohtani, Akira Fujimoto, Hideo Wada, Masatoshi Koyama, Akihiko Fujii, Akihiro Shimizu, Toshihiko Maemoto

    International conference  11th International Congress on Ceramics  ( Sapporo Convention Center )  Poster (general)

    2026.09
    　
    　

  • Characterization of Physical Properties and Ultraviolet Photoresponse of GaOx Thin Films Deposited by Chemical Solution Deposition Method

    Yuki Nakano, Shunsuke Enoki, Masaaki Goda, Sora Nakashima, Masatoshi Koyama, Kazuto Koike, Akihiko Fujii, Toshihiko Maemoto

    International conference  11th International Congress on Ceramics  ( Sapporo Convention Center )  Poster (general)

    2026.09
    　
    　

  • Structural and optical properties of Ga2O3 thin films deposited by chemical solution deposition toward deep-ultraviolet photodetectors

    Masatoshi Koyama, Yuki Nakano, Masaaki Goda, Kazuto Koike, Akihiko Fujii, and Toshihiko Maemoto

    International conference  The 23rd International Sol-Gel Conference 2026 (SolGel 2026)  ( Lisboa, Portugal )  Poster (general)

    2026.08
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    2026.09

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Social Contribution 【 display / non-display 】

  • SHINE (Sustainable Higher Education International Networks & Excellence) Research Program of the Philippine Association of Private Schools, Colleges and Universities

    2026.04
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