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Improvement of device characteristics by elucidation of non-radiative defect formation mechanism in diamond crystals

Research Project

Project/Area Number 19K05293
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 30010:Crystal engineering-related
Research InstitutionOsaka University

Principal Investigator

Maida Osamu  大阪大学, 大学院工学研究科, 助教 (40346177)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsダイヤモンド / 結晶欠陥 / ワイドギャップ / 半導体物性 / 欠陥評価 / 電子・電気材料 / 格子欠陥
Outline of Research at the Start

本研究ではダイヤモンド半導体結晶評価のための非輻射欠陥評価系の広帯域化、高感度化を図る。さらに、開発した非輻射欠陥評価系を用いて未だ明らかになっていないダイヤモンド半導体結晶の深い非輻射型欠陥の生成機構の解明とその低減法の検討を行うことで、ダイヤモンド半導体結晶の高品質化を図るとともにダイヤモンド半導体デバイスの特性改善を試みる。

Outline of Final Research Achievements

The achievement of the growth of high-quality diamond films, which is expected as a potential material for next generation semiconductors, is of technological importance to diamond electronic devices. For the improvement of the crystal quality of diamond films, it is essential to investigate the nonradiative defects of the diamond films which have not been clarified in detail. In this study, we have fabricated an evaluation system for nonradiative defects by means of transient photocapacitance method, and characterized the boron-doped diamond films.

Academic Significance and Societal Importance of the Research Achievements

次世代の半導体材料として期待されるダイヤモンド半導体結晶を含めたワイドバンドギャップ半導体材料の深い非輻射欠陥評価はこれまで積極的に行われておらず、その詳細はいまだ解明されていない。本研究は過渡光容量分光法を用いた非輻射欠陥評価系を構築し、ダイヤモンド半導体結晶の非輻射欠陥評価を行った。さらにその生成要因を解明し、結果を結晶合成にフィードバックすることで結晶品質の改善を図った。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (13 results)

All 2022 2021 2020 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (12 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results)

  • [Journal Article] Characterization of deep interface states in SiO2/B-doped diamond using the transient photocapacitance method2022

    • Author(s)
      O. Maida, D. Kanemoto, and T. Hirose
    • Journal Title

      Thin Solid Films

      Volume: 741 Pages: 139026-139026

    • DOI

      10.1016/j.tsf.2021.139026

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Characterization of deep level defects in boron-doped (001) and (111) diamond films2022

    • Author(s)
      O. Maida, S. Ichikawa, and K. Kojima
    • Organizer
      The 22nd International Vacuum Congress
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ホモエピタキシャル成長ホウ素ドープダイヤモンド半導体結晶の深い欠陥準位評価2022

    • Author(s)
      毎田 修, 市川 修平, 小島一信
    • Organizer
      第42回ナノテスティングシンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 時間分解2光子光電子分光法を用いた表面再結合寿命の直接評価2022

    • Author(s)
      市川 修平, 毎田 修, 小島 一信
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Characterization of Semiconductor Crystals Based on Omnidirectional Photoluminescence (ODPL) Spectroscopy2022

    • Author(s)
      K. Kojima, S. Ichikawa, O. Maida, K. Shima, and S. Chichibu
    • Organizer
      241st ECS Meeting
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 過渡光容量分光法による (111)ホウ素ドープCVDダイヤモンド薄膜の結晶欠陥評価2021

    • Author(s)
      毎田 修, 児玉 大志, 兼本 大輔, 廣瀬 哲也
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] SiO2/ホウ素添加CVDダイヤモンド界面の過渡光容量法を用いた界面準位評価2021

    • Author(s)
      毎田 修, 児玉 大志, 兼本 大輔,廣瀬 哲也
    • Organizer
      2021年日本表面真空学会学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Transient photocapacitance measurement for characterization of deep level defects in boron-doped (001) and (111) diamond films2021

    • Author(s)
      O. Maida, T. Kodama, D. Kanemoto and Tetsuya Hirose
    • Organizer
      9th International Symposium on Surface Science
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] ホウ素添加ホモエピタキシャル成長ダイヤモンド薄膜の過渡光容量法を用いた結晶欠陥評価2020

    • Author(s)
      毎田 修,兼本 大輔,廣瀬 哲也
    • Organizer
      2020年日本表面真空学会学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 高濃度ホウ素ドープダイヤモンド多層膜クラスター構造の作製とその評価2020

    • Author(s)
      毎田 修,兼本 大輔,廣瀬 哲也
    • Organizer
      2020年日本表面真空学会学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] Transient photocapacitance measurement for characterization of deep defects in B-doped diamond films2019

    • Author(s)
      Osamu Maida and Ryosuke Yamashita
    • Organizer
      21th International Vacuum Congress
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] (111)ダイヤモンド基板上ホモエピタキシャル成長におけるメタン濃度2019

    • Author(s)
      毎田修,兼本大輔,廣瀬哲也
    • Organizer
      2019年日本表面真空学会学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 過渡光容量分光法を用いたボロンドープダイヤモンド薄膜の非輻射欠陥評価2019

    • Author(s)
      毎田修,兼本大輔,廣瀬哲也
    • Organizer
      2019年日本表面真空学会学術講演会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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