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Molecular Dynamics Simulation of GaN Dry Etching

Research Project

Project/Area Number 19540527
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Plasma science
Research InstitutionRitsumeikan University (2008)
Takamatsu National College of Technology (2007)

Principal Investigator

HARAFUJI Kenji  Ritsumeikan University, 理工学部, 教授 (60442472)

Co-Investigator(Kenkyū-buntansha) KAWAMURA Katsuyuki  東京工業大学, 理工学研究科, 教授 (00126038)
Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2007: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsプラズマ加工 / 計算物理 / 結晶工学 / 窒化ガリウム / 分子動力学 / ドライエッチング / 結晶欠陥 / イオンアシストエッチング
Research Abstract

物理スパッタリング率のイオンエネルギー及びイオン入射角度依存性、さらにエッチング後の結晶欠陥の基礎データを収集した。N原子に対するスパッタリング率はGa原子に対するそれよりも大きい。エッチングによるダメージに関して、結晶内にはGaとNがペアになったショットキー欠陥が生じやすい。Gaは格子間原子と成り得るが、Nは格子間原子としては結晶内に存在し得ず、表面上に押し出されて再結晶化するか、スパッタされる。反応性塩素ガスを結晶表面に被覆した場合のイオンアシストエッチングの素過程を調べた。物理スパッタリングの場合と比べて、Gaに対するエッチング率が飛躍的に増加すること、また、Arイオンが入射してから、Gaが表面から離脱するまでの時間が10倍程度遅くなることを確認した。

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (8 results)

All 2009 2008 2007

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (6 results)

  • [Journal Article] Sputtering Yield as a Function of Incident Ion Energy and Angle in Wurtzite-Type GaN Crystal2008

    • Author(s)
      K.Harafuji and K. Kawamura
    • Journal Title

      Japanese Journal of Applied Physics 74

      Pages: 1536-1540

    • NAID

      40015945435

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Sputtering Yield as a Function of Incident Ion Energy and Angle in Wurtzite-Type GaN Crystal2008

    • Author(s)
      服藤 憲司
    • Journal Title

      Japanese Journal of Applied Physics 47

      Pages: 1536-1540

    • NAID

      40015945435

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] Molecular Dynamics of GaN Dry Etching2009

    • Author(s)
      服藤憲司, 河村雄行
    • Organizer
      Plasma Science Symposium 2009 and The 26th Symposium on Plasma Processing
    • Place of Presentation
      名古屋
    • Year and Date
      2009-02-02
    • Related Report
      2008 Annual Research Report
  • [Presentation] Molecular Dynamics of GaN Dry Etching2009

    • Author(s)
      K. Harafuji and K. Kawamura
    • Organizer
      Proc. Plasma Science Symposium 2009 and The 26th Symposium on Plasma Processing
    • Related Report
      2008 Final Research Report
  • [Presentation] Point defects induced by dry-etching in wurtzite-type GaN crystal2007

    • Author(s)
      服藤 憲司
    • Organizer
      18th International Symposium on Plasma Chemistry
    • Place of Presentation
      京都
    • Year and Date
      2007-08-28
    • Related Report
      2007 Annual Research Report
  • [Presentation] Energy and angular dependence of incident Arion in dry-etching of wurtzite-type GaN crystal2007

    • Author(s)
      服藤 憲司
    • Organizer
      XXVIII International Conference on Phenomena in Ionized Gases
    • Place of Presentation
      プラハ
    • Year and Date
      2007-07-16
    • Related Report
      2007 Annual Research Report
  • [Presentation] Point defects induced by dry-etching in wurtzite-type GaN crystal2007

    • Author(s)
      K. Harafuji and K. Kawamura
    • Organizer
      Abstracts of 18th International Symposium on Plasma Chemistry
    • Related Report
      2008 Final Research Report
  • [Presentation] Energy and angular dependence of incident Ar ion in dry-etching of wurtzite-type GaN crystal2007

    • Author(s)
      K. Harafuji and K. Kawamura
    • Organizer
      XXVIII International Conference on Phenomena in Ionized Gases
    • Related Report
      2008 Final Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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