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Atomically flat planarization of Ir thin films for larger diameter single crystalline diamond growth

Research Project

Project/Area Number 18K14026
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
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)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywordsヘテロエピタキシャル成長 / ダイヤモンド / プラナリゼーション / 化学機械研磨 / ヘテロエピタキシャルダイヤモンド / イリジウム / 原子オーダープラナリゼーション
Outline of Final Research Achievements

A new diamond growth process toward the large diamond substrates was proposed. A key manufacturing process relays on the Ir / Si substrate structures. In order to realize the manufacturing of the structure, a new processing consists of bonding and transfer of Ir thin film was required. This process also required a very small amount of planarization CMP processing. Since this is difficult with conventional polishing technology, we first designed a new concept of polishing machine equipped with a magnetic levitation mechanism, and finally obtained the desired Ir/Si substrate structure.

Academic Significance and Societal Importance of the Research Achievements

本研究はダイヤモンド成長に使用するIr薄膜/Si基板構造を達成した。従来のダイヤモンド成長用のIr/MgO下地基板構造ではダイヤモンドとMgO基板との1桁以上異なる熱膨張係数差によりダイヤモンド成長にクラックが発生し、ダイヤモンドの大型化を妨げていた。一方、本研究で達成した構造では熱膨張係数差は殆ど発生せず、クラックフリーダイヤモンド成長が理論的に可能である。これにより、ダイヤモンドを用いた高効率なパワーエレクトロニクスデバイスの実現性を高めることができた。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (5 results)

All 2019

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

  • [Journal Article] Proposal on rapid determination of removal rate in chemical mechanical polishing of hard-to-process single crystals2019

    • Author(s)
      Hideo Aida, Ryotaro Higashi, Hidetoshi Takeda, and Toshiro Doi
    • Journal Title

      Advanced Micro-Fabrication and Green Technology (Transaction of MIRAI)

      Volume: 7 Pages: 4-9

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] Proposal on rapid determination of removal rate in chemical mechanical polishing of hard-to-process single crystals2019

    • Author(s)
      Hideo Aida, Ryotaro Higashi, Hidetoshi Takeda, and Toshiro Doi
    • Organizer
      The 12th MIRAI conference on Microfabrication and Green Technology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Challenges toward prospective precise polishing techniques by fusing environmental controlling and plasma technology2019

    • Author(s)
      (44)Hideo Aida, Osamu Ohnishi, Hidetoshi Takeda, Syuhei Kurokawa, Yasuhisa Sano, and Toshiro
    • Organizer
      13th International Conference on Plasma-Nano Technology & Science
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Challenges toward prospective precise polishing techniques by fusing environmental controlling and plasma technology2019

    • Author(s)
      Hideo Aida, Osamu Ohnishi, Hidetoshi Takeda, Syuhei Kurokawa, Yasuhisa Sano, and Toshiro Doi
    • Organizer
      International Symposium on Advanced Plasma Science and its Applications 2019
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Development of rapid determination method of removal rate in chemical mechanical polishing of hard-to-process single crystals2019

    • Author(s)
      Hideo Aida, Ryotaro Higashi, Hidetoshi Takeda, and Toshiro Doi
    • Organizer
      Manufacturing Institute for Research on Advanced Initiatives (MIRAI) 2019
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2021-12-27  

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