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Global Investigation of Electrical Damage Introduced into p-GaN Films by Plasma Ion Bombardments

Research Project

Project/Area Number 19K04497
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21050:Electric and electronic materials-related
Research InstitutionChubu University

Principal Investigator

Nakano Yoshitaka  中部大学, 工学部, 教授 (60394722)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsp型GaN / プラズマイオン衝撃 / 電気的ダメージ / 欠陥準位 / 光容量過渡分光法 / プラズマイオン / Ar / Mgアクセプター / CF4 / Ga空孔 / N空孔 / パワー半導体 / ノーマリーオフ / イオン衝撃
Outline of Research at the Start

窒化物半導体(GaN)は次世代の省エネルギー型デバイス材料として期待されているが、所望のデバイス特性を得るにはプラズマイオンを用いた3次元的なデバイス加工を行う必要がある。この際、プラズマイオンの物理的衝撃により誘発する電気的ダメージはデバイス特性の信頼性を著しく低下させてしまう。本研究では、p型GaNへのプラズマイオン衝撃に焦点を絞り、イオン衝撃で発生する支配的な欠陥準位と電気的ダメージの生成挙動を系統的に調べ、プラズマイオン衝撃による電気的ダメージの全容を解明する。

Outline of Final Research Achievements

In order to operate a GaN vertical power MOS transistor, which is expected as a next-generation power device, with a large current, it is needed to fabricate a three-dimensional device structure by reactive dry etching technology using plasma ions. In this case, however, electrical damage occurs due to the physical impact of plasma ions. In this study, we have systematically investigated the generation behavior of electrical damage caused by plasma ion impact on p-type GaN from the viewpoint of Mg acceptor concentration distribution and deep-level defect distribution, and clarified the plasma treatment time and UV irradiation dependence.

Academic Significance and Societal Importance of the Research Achievements

本研究で得られた成果は電気的ダメージを排除する方向でプラズマ処理条件にフィードバックし、デバイスの高品質化・高信頼性化に向けたブレークスルーとなり得ることで学術的価値および実用上の価値が大きい。また、ノーマリーオフ動作のGaN縦型パワーMOSトランジスタの早期実用化へ繋がる。更に、欠陥準位の観点からプラズマ処理とデバイス特性・信頼性を結びつける研究成果であるため、材料・デバイス設計に実効的なボトムアップ提案が可能となり、GaN系電子デバイス分野の発展に大きく貢献できる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (19 results)

All 2022 2021 2020 2019 Other

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results) Presentation (14 results) (of which Int'l Joint Research: 8 results) Remarks (1 results)

  • [Journal Article] Photocatalytic Activity Enhancement of Anatase/Rutile‐Mixed Phase TiO2 Nanoparticles Annealed with Low‐Temperature O2 Plasma2021

    • Author(s)
      Kawakami Retsuo、Mimoto Yuki、Yanagiya Shin-ichiro、Shirai Akihiro、Niibe Masahito、Nakano Yoshitaka、Mukai Takashi
    • Journal Title

      physica status solidi (a)

      Volume: 218 Issue: 24 Pages: 2100536-2100536

    • DOI

      10.1002/pssa.202100536

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of nonequilibrium atmospheric-pressure O2 plasma-assisted annealing on anatase TiO2 nanoparticles2020

    • Author(s)
      Kawakami Retsuo、Yoshitani Yuki、Shirai Akihiro、Yanagiya Shin-ichiro、Koide Hirofumi、Mimoto Yuki、Kajikawa Kosuke、Niibe Masahito、Nakano Yoshitaka、Azuma Chisato、Mukai Takashi
    • Journal Title

      Applied Surface Science

      Volume: 526 Pages: 146684-146684

    • DOI

      10.1016/j.apsusc.2020.146684

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effects of air-based nonequilibrium atmospheric pressure plasma jet treatment on characteristics of polypropylene film surfaces2020

    • Author(s)
      Kawakami Retsuo、Yoshitani Yuki、Mitani Kimiaki、Niibe Masahito、Nakano Yoshitaka、Azuma Chisato、Mukai Takashi
    • Journal Title

      Applied Surface Science

      Volume: 509 Pages: 144910-144910

    • DOI

      10.1016/j.apsusc.2019.144910

    • NAID

      120007175672

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Characterisation of defects in p-type 4H-, 6H- and 3C-SiC epilayers grown on SiC substrates2019

    • Author(s)
      Kato Masashi、Ichikawa Naoto、Nakano Yoshitaka
    • Journal Title

      Materials Letters

      Volume: 254 Pages: 96-98

    • DOI

      10.1016/j.matlet.2019.07.043

    • Related Report
      2019 Research-status Report
  • [Presentation] Ar+イオン衝撃により p型 GaN に導入される電気的ダメージの UV 光照射効果2022

    • Author(s)
      豊留 彬、中野 由崇、川上 烈生、新部 正人
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 高温度真空中アニール処理したb-Ga2O3(-201)単結晶の欠陥準位評価2022

    • Author(s)
      豊留 彬、中野 由崇
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Intrinsic Defect Investigation of n-Type b-Ga2O3 Single Crystals Treated by High-Temperature Annealing in Vacuum2021

    • Author(s)
      Toyotome Akira、Nakano Yoshitaka
    • Organizer
      The Eighth International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies (EM-NANO 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Nonequilibrium Atmospheric-Pressure O2 Plasma-Assisted Annealing Effect on Photocatalytic Activity of Anatase/Rutile-Mixed Phase TiO2 Nanoparticles2021

    • Author(s)
      Mimoto Yuki、Kawakami Retsuo、Yanagiya Shin-ichiro、Masahito Niibe、Nakano Yoshitaka、Mukai Takashi
    • Organizer
      42nd International Symposium of Dry Process (DPS 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Photobactericidal Activity of Anatase Titanium Dioxide Nanoparticles Annealed with the Assistance of Nonequilibrium Atmospheric-Pressure Oxygen Plasma2021

    • Author(s)
      Retsuo Kawakami、Mimoto Yuki、Shirai kihiro、Yanagiya Shin-ichiro、Niibe Masahito、Nakano Yoshitaka、Takashi Mukai
    • Organizer
      42nd International Symposium of Dry Process (DPS 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electrical Damage Introduced into p-GaN Films by Ar Plasma Treatments2021

    • Author(s)
      Akira Toyotome、Yoshitaka Nakano、Retsuo Kawakami、Masahito Niibe
    • Organizer
      12th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials 13th International Conference on Plasma-Nano Technology & Science
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Electrical Investigation of Turn-On Capacitance Recovery Characteristics in Auto or External Carbon-doped AlGaN/GaN/SiC/Si2021

    • Author(s)
      Hiroki Suzuki、Shigeomi Hishiki、Keisuke Kawamura、Yoshitaka Nakano
    • Organizer
      12th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials 13th International Conference on Plasma-Nano Technology & Science
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Annealing behavior of deep-level defects in unintentionally doped n-type b-Ga2O3 single crystal2021

    • Author(s)
      Yoshitaka Nakano、Akira Toyotome、Riku Suzuki、Yuki Yasuda
    • Organizer
      12th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials 13th International Conference on Plasma-Nano Technology & Science
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 高温度アニール処理したSiドープb-Ga2O3(010)単結晶の電気特性評価2021

    • Author(s)
      中野 由崇、豊留 彬、鈴木 陸、安田 優綺
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 大気圧低温O2プラズマ支援熱処理したアナターゼ/ルチル混晶型TiO2ナノ粒子の紫外/可視光触媒活性2021

    • Author(s)
      味元 勇樹、川上 烈生、柳谷 伸一郎、新部 正人、中野 由崇、向井 孝志
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] CF4プラズマ処理したp型GaNの電気的ダメージ評価2020

    • Author(s)
      中野 由崇、豊留 彬
    • Organizer
      第67回応用物理学会 春季学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Ar+イオン照射により生成するp型GaNの電気的ダメージ評価2019

    • Author(s)
      中野 由崇、豊留 彬
    • Organizer
      第80回応用物理学会 秋季学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Electrical Damage Introduced into p-GaN Films by Ar Plasma Treatments2019

    • Author(s)
      Nakano Yoshitaka、Akira Toyotome
    • Organizer
      7th International Symposium on Organic and Inorganic Materials and Related Nanotechnologies (EM-NANO2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Deep-Level Defect Investigation of Si-Doped b-Ga2O3 Homoepitaxial Films Grown by Halide Vapor Phase Epitaxy2019

    • Author(s)
      Nakano Yoshitaka、Akira Toyotome
    • Organizer
      2019-edition of Compound Semiconductor Week (CSW2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Remarks] 中野研究室(物性デバイス)

    • URL

      https://www3.chubu.ac.jp/faculty/nakano_yoshitaka/#header

    • Related Report
      2021 Annual Research Report 2020 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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