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Improvement of crystal quality of heteroepitaxial diamond toward realization of next-generation power electronics devices

Research Project

Project/Area Number 20H02478
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 26050:Material processing and microstructure control-related
Research InstitutionNagaoka University of Technology

Principal Investigator

AIDA HIDEO  長岡技術科学大学, 工学研究科, 准教授 (10811648)

Co-Investigator(Kenkyū-buntansha) 木村 豊  青山学院大学, 理工学部, 助教 (40838851)
澤邊 厚仁  青山学院大学, 理工学部, 教授 (70187300)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2022: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
Keywordsダイヤモンド / ヘテロエピタキシャル成長 / CVD法 / 欠陥密度
Outline of Research at the Start

次世代究極半導体ダイヤモンドデバイスの実現に向け、大型ダイヤモンド基板が求められることから、大型化への期待感の高いヘテロエピタキシャルダイヤモンド成長技術に着目する。そこでの喫緊の課題は結晶の高品質化、すなわち欠陥密度の徹底的な低減である。成長時に発生する結晶欠陥を下地基板・成長様式・成長条件・成長テクニックにより抑制して実用レベルの高品質ダイヤモンド基板実現を目指す。

Outline of Final Research Achievements

To realize diamond heteroepitaxy for substrate production, reduction of dislocations is important task. In this project, we focused on the fabrication of perfect foreign substrate for heteroepitaxy, annihilation/reduction technique of dislocations generated at substrate/epitaxial interface. Polishing, and subsequent cleaning and annealing of MgO was proven to produce MgO surface to be free of damage, which resulted in the atomical step-terrace structures. Epitaxial overgrowth technique was applied to effectively reduce the dislocations. In addition, we have succeeded the in-situ monitoring of surface reflectance and substrate curvatures during the heteroepitaxial diamond growth at the first time, which enabled to understand accumulation of growth strain in heteroepitaxial diamond.

Academic Significance and Societal Importance of the Research Achievements

温室効果ガス削減に極めて大きな貢献が期待されるダイヤモンドによる究極の省エネルギーパワー半導体デバイスの実現には、高品質かつ大型のダイヤモンド基板実現が必須である。ヘテロエピタキシャル成長法による基板大型化には目途が付いているが、結晶欠陥密度の低い高品質ダイヤモンド成長技術開発が必要である。本検討を通じ世界に先駆けて成功した成長時応力のリアルタイム計測により、成長応力の発生機構を検討できる可能性が見出された。また成膜条件のリアルタイム精密制御を可能とすることで低欠陥化できる可能も見出したことから、大型かつ高品質なダイヤモンド基板の実現に向けた成膜制御技術が大きく進展した。

Report

(4 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (24 results)

All 2022 2021 2020

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (18 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results)

  • [Journal Article] Analysis of the correlation between in-situ and ex-situ observations of the initial stages of growth of heteroepitaxial diamond on Ir(0 0 1)/MgO(0 0 1)2022

    • Author(s)
      Kimura Yutaka、Oshima Ryuji、Sawabe Atsuhito、Aida Hideo
    • Journal Title

      Journal of Crystal Growth

      Volume: 595 Pages: 126807-126807

    • DOI

      10.1016/j.jcrysgro.2022.126807

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chemical Mechanical Polishing of MgO Substrate and Its Effect on Fabrication of Atomic Step-Terrace Structures on MgO Surface by Subsequent High-Temperature Annealing2022

    • Author(s)
      Aida Hideo、Ojima Takumi、Oshima Ryuji、Ihara Takahiro、Takeda Hidetoshi、Kimura Yutaka、Sawabe Atsuhito
    • Journal Title

      ECS Journal of Solid State Science and Technology

      Volume: 11 Issue: 11 Pages: 114005-114005

    • DOI

      10.1149/2162-8777/aca3d1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Challenges of future high-precision polishing methods for hard-to-process materials by the fusion of environmental control and plasma technology2022

    • Author(s)
      DOI K.Toshiro、AIDA Hideo、OHNISHI Osamu、YIN Shaohui、REN Yinghui
    • Journal Title

      Diamond & Abrasives Engineering

      Volume: 42 Pages: 637-649

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthesis and charatrization of diamond abrasives grains containing boron compounds2022

    • Author(s)
      Ryuji Oshima, Xiang Ren Cui, Hideo Aida, Kanji Iizuka
    • Journal Title

      Advanced Micro-Fabrication and Green Technology

      Volume: 9 Pages: 30-34

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mirror-grinding of single-crystal diamond substrates with a rotary grinder2022

    • Author(s)
      Aida Hideo、Oshima Ryuji、Minamigata Hiroki、Kawaguchi Shogo、Tokutake Junpei、Sifuentes Juan Manuel Del Angel、Kimura Yutaka
    • Journal Title

      Diamond and Related Materials

      Volume: 121 Pages: 108733-108733

    • DOI

      10.1016/j.diamond.2021.108733

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] In-situ reflectance interferometry of heteroepitaxial diamond growth2021

    • Author(s)
      Aida Hideo、Oshima Ryuji、Ouchi Takaya、Kimura Yutaka、Sawabe Atsuhito
    • Journal Title

      Diamond and Related Materials

      Volume: 113 Pages: 108253-108253

    • DOI

      10.1016/j.diamond.2021.108253

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] Comparison of in-situ and ex-situ observation of initial growth morphology of heteroepitaxial diamond grown on Ir(001)/MgO(001)2022

    • Author(s)
      Yutaka Kimura, Ryuji Oshima, Atsuhito Sawabe, Hideo Aida
    • Organizer
      32nd International Conference on Diamond and Carbon Materials
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Investigation of Mirror-Grinding Conditions for Large diameter Single Crystal Diamond Substrates2022

    • Author(s)
      Junpei Tokutake, Hiroki Minamigata, Juan Manuel Del Angel Sifuentes, Tetsuro Iyama, Yutaka Kimura, Ryuji Oshima, Hideo Aida
    • Organizer
      The 15th International Conference on New Diamond and Nano Carbons
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Detailed study on preparation of MgO substrate for diamond heteroepitaxy2022

    • Author(s)
      Takahiro Ihara, Takumi Ojima, Ryuji Oshima, Yutaka Kimura, Atsuhito Sawabe, Hideo Aida
    • Organizer
      The 15th International Conference on New Diamond and Nano Carbons (NDNC2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Experimental and theoretical analysis on substrate bending during heteroepitaxial growth of diamond2022

    • Author(s)
      Yutaka Kimura, Takahiro Ihara, Takumi Ojima, Hina Tanaka, Ryuji Oshima, Atsuhito Sawabe, Hideo Aida
    • Organizer
      The 15th International Conference on New Diamond and Nano Carbons (NDNC2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Oblique Chemical Mechanical Polishing for Investigating Distribution of Subsurface Damages in Single Crystal Diamond Substrate2022

    • Author(s)
      Junpei Tokutake, Takaya Kobayashi, Kyosuke Nakagawa, Ryuji Oshima, Hideo Aida
    • Organizer
      Advanced Micro-Fabrication and Green Technology
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ir/MgO基板上ヘテロエピタキシャルダイヤモンド初期成長様式のその場観察2022

    • Author(s)
      伊原隆宏,木村豊,澤邊厚仁,高須智也, 大島龍司,會田英雄
    • Organizer
      応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 単結晶MgO基板の原子レベル表面創製2022

    • Author(s)
      尾島拓海,伊原隆宏,大島龍司,木村豊,澤邊厚仁,會田英雄
    • Organizer
      表面技術協会第145回講演大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ヘテロエピタキシャルダイヤモンド成長における基板反り変形の観察2022

    • Author(s)
      木村豊,伊原隆宏,尾島拓海,田中日菜,大島龍司,澤邊厚仁,會田英雄
    • Organizer
      応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Synthesis and charatrization of diamond abrasives grains containing boron compounds2021

    • Author(s)
      Ryuji Oshima, Xiang Ren Cui, Hideo Aida, Kanji Iizuka
    • Organizer
      Advanced Micro-Fabrication and Green Technology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] GaN・ダイヤモンド基板の精密加工と加工変質層の評価2021

    • Author(s)
      會田英雄
    • Organizer
      第154 回 結晶工学分科会研究会(応用物理学会)
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 結晶MgO基板の原子レベル平坦化プロセスの最適化2021

    • Author(s)
      尾島拓海,田中日菜,木村豊,澤邊厚仁,大島龍司,會田英雄
    • Organizer
      表面技術協会第144回講演大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ヘテロエピタキシャルダイヤモンドの成長過程における下地基板の反り挙動観察2021

    • Author(s)
      伊原隆宏,尾島拓海,田中日菜,大島龍司,木村豊,澤邊厚仁,會田英雄
    • Organizer
      精密工学会北陸信越支部学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 単結晶MgO基板の原子平坦化プロセスの構築2021

    • Author(s)
      尾島拓海,田中日菜,伊原隆宏,木村豊,澤邊厚仁,大島龍司,會田英雄
    • Organizer
      精密工学会北陸信越支部学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 横型研削機を用いたホモエピタキシャル成長用単結晶ダイヤモンド基板の作製-基板の固定研削および回転研削における加工特性の評価-2021

    • Author(s)
      徳武純平,南方啓貴,Juan Manuel Del Angel Sifentes,井山徹郎,木村豊,大島龍司,會田英雄
    • Organizer
      精密工学会北陸信越支部学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ホモエピタキシャル成長用ダイヤモンド基板の研削加工とダメージ評価2021

    • Author(s)
      大宮裕之,南方啓貴,川口正悟,會田英雄,大島龍司
    • Organizer
      2021年度精密工学会春季大会学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Ir(001)/MgO(001)基板上に成長したヘテロエピタキシャルダイヤモンドの初期成長の表面観察と配向評価2020

    • Author(s)
      木村豊, 大内貴矢, 會田英雄, 大島龍司, 澤邊厚仁
    • Organizer
      応用物理学会秋季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 研削加工によるホモエピタキシャル成長用下地ダイヤモンド基板の作成と評価2020

    • Author(s)
      南方啓貴,川口正悟,福田雅人,大宮裕之,大島龍司,會田英雄
    • Organizer
      2020年度精密工学会北陸信越支部学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 単結晶MgO 基板の原子レベル平坦化加工2020

    • Author(s)
      尾島拓海, Francisco Raul Vazquez Gomez Martinez, 會田英雄,大島龍司, 木村豊, 澤邊厚仁
    • Organizer
      2020年度精密工学会北陸信越支部学術講演会
    • Related Report
      2020 Annual Research Report

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Published: 2020-04-28   Modified: 2025-01-30  

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