KOYAMA Masatoshi

写真a

Title

Associate Professor

Research Fields, Keywords

Semiconductor engineering, Semiconductor devices, Physics of semiconductor, Semiconductor manufacturing processes
To the head of this page.▲

Graduating School 【 display / non-display 】

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

To the head of this page.▲

Graduate School 【 display / non-display 】

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

To the head of this page.▲

Degree 【 display / non-display 】

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

To the head of this page.▲

Association Memberships 【 display / non-display 】

  • 2025.08
    -
    Now
     

    European Materials Research Society  FRANCE

  • 2020.08
    -
    Now
     

    The Electrochemical Society  Others

To the head of this page.▲

Committee Memberships 【 display / non-display 】

  • 2024.06
    -
    Now

     

  • 2021.04
    -
    2023.03

     

  • 2026.06
    -
    Now

     

  • 2024.04
    -
    Now

     

  • 2018.06
    -
    Now

     

display all >>

To the head of this page.▲

Research field 【 display / non-display 】

  • Electronic materials/Electric materials

  • Physics of semiconductors

  • Semiconductor engineering

  • Optical devices

  • High Electron Mobility Transistors(HEMTs)

display all >>

To the head of this page.▲
 

Papers 【 display / non-display 】

  • 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 )   2026.08

    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

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

    Kazuki Ueda, Hideya Ochiai, Ryunosuke Ohtani, Akira Fujimoto, Hideo Wada, Masatoshi Koyama, Akihiko Fujii, Akihiro Shimizu, and Toshihiko Maemoto  ( Multiple Authorship )

    Journal of the Society for Information Display     2026.05

    Research paper (scientific journal)  English

    DOI

  • Uniaxial orientation study on donor-acceptor π-conjugated polymer by separated process of bar-coating and evaporation-site-controlled annealing

    Seiji Iwai, Sadahito Uto, Masatoshi Koyama, Toshihiko Maemoto and Akihiko Fujii  ( Multiple Authorship )

    Japanese Journal of Applied Physics     2026.02

    Research paper (scientific journal)  English

    DOI

display all >>

To the head of this page.▲

Review Papers 【 display / non-display 】

  • 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

To the head of this page.▲

Research Grants and Projects 【 display / non-display 】

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

    TOKUYAMA SCIENCE FOUNDATION 

    Project Year：2026.06  -  2027.06 

  • Grants-in-Aid for Scientific Research(KAKENHI)

    Project Year：2026.04  -  2029.03 

  • Project Year：2025.04  -  2026.03 

  • Project Year：2024.04  -  2025.03 

  • Project Year：2021.04  -  2024.03 

display all >>

To the head of this page.▲

Presentations 【 display / non-display 】

  • Deposition and Annealing Temperature Dependence of the Structural and Optical Properties of Mist-CVD-Grown Gallium Oxide Thin Films on c-plane Sapphire Substrates

    Masatoshi Koyama, Iori Yamasaki, Shunsuke Enoki, Misaki Nishikawa, Kazuto Koike, Akihiko Fujii, Toshihiko Maemoto

    International conference  Compound Semiconductor Week 2026  ( Kumamoto, Japan )  Poster (general)

    2026.05
    　
    　

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

    Yudai Inagaki, Taichi Ito, Yuichiro Shindo, Takanobu Yamazaki, Masatoshi Koyama, Koji Noguchi

    International conference  The 40th International Conference on Compound Semiconductor Manufacturing Technology (CS MANTECH)  ( Portland, Oregon, U.S.A. )  Oral Presentation(general)

    2026.05
    　
    　

  • Effect of Cationic Polymer Addition on the Tribological Performance of Elec- troplated Ag Coatings

    Satoshi Takamatsu, Shoei Mizuhashi, Masatoshi Koyama, Yuichiro Shindo

    International conference  The 40th International Conference on Compound Semiconductor Manufacturing Technology (CS MANTECH)  ( Portland, Oregon, U.S.A. )  Poster (general)

    2026.05
    　
    　

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

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

    International conference  Display Week 2026  ( L.A. CA, U.S.A. )  Poster (general)

    2026.05
    　
    　

  • Fabrication of (Ga1-xInx)2O3 alloy films on a c-plane sapphire substrate by chemical solution deposition and their application to solar-blind ultra-violet photodetectors

    Akito Horibe，Hiroto Tsuruyama，Iori Yamasaki，Shunsuke Enoki， Nobuya Hiroshiba，Masatoshi Koyama，Kazuto Koike

    International conference  Materials Research Meeting 2025  ( Pacifico Yokohama, Yokohama, JP )  Poster (general)

    2025.12
    　
    　

display all >>

To the head of this page.▲
 

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
    -
    Now

To the head of this page.▲