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Development of 3D nanostructured zinc oxide thin film formation technology with plasma assisted process using microdroplets

Research Project

Project/Area Number 21K04711
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 26050:Material processing and microstructure control-related
Research InstitutionOsaka University

Principal Investigator

Takenaka Kosuke  大阪大学, 接合科学研究所, 准教授 (60432423)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
KeywordsミストCVD / 酸化亜鉛 / 微粒子 / ガスセンサ / プラズマ支援プロセス / ガスセンサー
Outline of Research at the Start

酸化物半導体材料の表界面領域の物理的・化学的特性付与によって発現した機能により、デバイス特性を大きく向上させる革新的な半導体デバイス創製にブレークスルーをもたらす技術開発を念頭に、新しい表面微細構造形成プロセス技術として3次元ナノ構造を有する酸化物半導体薄膜を形成する技術の確立を目指す。プラズマの特徴である「高活性な反応場」に「微小液滴」を導入し、それらの反応を能動的制御することにより酸化物半導体微粒子の形状制御を行う技術の開発と、その微粒子を利用した酸化物半導体薄膜の3次元微細構造形成・制御技術の確立を目的とする。

Outline of Final Research Achievements

For development of innovative semiconductor devices with greatly improved device properties through the functionality expressed by imparting to the surface interface region of oxide semiconductor materials with physical and chemical properties, the formation technology of high-quality 3D zinc oxide thin films with the desired optimal crystal structure and composition, and with a thin film structure that has an extreme specific surface area have been developed. These results suggest that radicals generated in the plasma due to the vapor supplied by the droplet contribute to the formation of zinc oxide fine particles from the droplet in the plasma, and that the droplet size in the initial plasma stage affects the shape of the fine particles.

Academic Significance and Societal Importance of the Research Achievements

微小液滴を用いてプラズマで反応を支援することにより(1)プラズマを用いた気相中での高反応場と(2)微小液滴の蒸発に起因した製膜前駆体の高速供給により、低温・高速製膜を実現でき、さらに微小液滴界面での反応により生成される材料の組成・結晶性および構造の精密制御できるプロセスはあまり例がなく独創的である。
2)本研究は従来研究には無い、プラズマという高反応場と微小液滴を用いた3次元ナノ構造形成・制御可能な独創的なプロセス開発の研究であり、次世代の新規機能性材料創成をも可能にするプロセスであり学術的な意義も高い。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (8 results)

All 2024 2023 2022 2021

All Presentation (8 results) (of which Int'l Joint Research: 3 results,  Invited: 4 results)

  • [Presentation] Plasma-assisted mist chemical vapor deposition for formation of 3D nanostructured oxide thin films2024

    • Author(s)
      Kosuke Takenaka, Susumu Toko and Yuichi Setsuhara
    • Organizer
      ISPlasma 2024/IC-PLANTS 2024/APSPT-13
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Plasma-assisted Mist CVD for Formation of 3D Nanostructured Zinc Oxide Thin Films2023

    • Author(s)
      Kosuke Takenaka, Susumu Toko and Yuichi Setsuhara
    • Organizer
      Joint Conference of Global Plasma Forum and 24th Workshop on Fine Particle Plasmas (WFPP24)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Droplet-Vaporization Behavior Analysis in Plasma for Fabrication of 3D Nanostructured Zinc Oxide Thin Films by Plasma-assisted Mist CVD2023

    • Author(s)
      Kosuke Takenaka, Susumu Toko and Yuichi Setsuhara
    • Organizer
      ISPlasma 2023 / IC-PLANTS 2023
    • Related Report
      2022 Research-status Report
  • [Presentation] プラズマ支援ミストCVDによる3次元ナノ構造酸化亜鉛薄膜形成に向けたプラズマ中の液滴蒸発挙動の解析2022

    • Author(s)
      竹中 弘祐,都甲 将,節原 裕一
    • Organizer
      2022年第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] プラズマ支援反応性プロセスを用いた機能性薄膜の低温形成2022

    • Author(s)
      竹中 弘祐,都甲 将,内田 儀一郎,江部 明徳、節原 裕一
    • Organizer
      第38回九州・山口プラズマ研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] Low-temperature formation of functional oxide materials with plasma-assisted reactive processes2022

    • Author(s)
      K. Takenaka, S. Toko and Y. Setsuhara
    • Organizer
      第32回日本MRS年次大会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Plasma-assisted reactive processes for low-temperature formation of functional materials2021

    • Author(s)
      Kosuke Takenaka, Yuji Hayashi, Hibiki Komatsu, Susumu Toko, Giichiro Uchida, Akinori Ebe, Yuichi Setsuhara
    • Organizer
      5th Asia Pacific Conference on Plasma Physics (AAPPS-DPP2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 反応性プラズマプロセスによる酸化物半導体薄膜形成2021

    • Author(s)
      竹中 弘祐,都甲 将,節原 裕一
    • Organizer
      2021 (令和3)年度第3回表面改質技術研究委員会
    • Related Report
      2021 Research-status Report
    • Invited

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Published: 2021-04-28   Modified: 2025-01-30  

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