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Composite Defect Engineering of Diamond Single Crystals under High Pressure

Research Project

Project/Area Number 20K21096
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 26:Materials engineering and related fields
Research InstitutionNational Institute for Materials Science

Principal Investigator

TANIGUCHI Takashi  国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, 拠点長 (80354413)

Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2021: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2020: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Keywordsダイヤモンド / 高圧合成 / 複合欠陥 / ダイヤモンド単結晶 / 異種元素ドーピング / 窒素、ホウ素ドーピング / カラーセンター探索 / カラーセンター
Outline of Research at the Start

硬度、熱伝導率等で最大の物性値を持つダイヤモンドにおいて、過去に未踏の大きな格子 ミスフィットを伴うドーピングへの自由度が得られれば飛躍的な機能応用展開が期待できる。ダイヤモンド中の主たる不純物は炭素の両隣のホウ素(B)と窒素(N )であり、理論的にはダイヤモンド中にBとNが固溶する際、B-Nペアの形成が安定と予想される。そこで、ダイヤモンド中に100ppmレベルでのB-Nペアによる複合欠陥形成し、大きな格子ミスフィットを伴う異種元素のppmレベルのドーピングに挑む。高濃度BNペア形成への挑戦度は高いが、従来の1500℃領域の高圧合成に加え、非金属触媒による2000℃領域での展開に挑む。

Outline of Final Research Achievements

After establishing high-pressure synthesis conditions to control the nitrogen concentration in diamond at the 0.1-100 ppm level, single crystals with nitrogen and boron co-doped in the 1-10 pm region were synthesized by adding trace amounts of boron. Nitrogen concentration was evaluated by the ESR method according to the concentration of P1 centers that substituted carbon atoms in the crystal, and boron concentration was evaluated by SIMS analysis. Nearly colorless diamond crystals in the intermediate region were obtained, along with yellow to blue diamond crystals with nitrogen excess and boron excess.
Furthermore, the addition of Sn as a dissimilar element produced significant recrystallized graphite and good quality diamond single crystals at the same time. It remains to be evaluated whether the new color centers observed are derived from Sn or not.

Academic Significance and Societal Importance of the Research Achievements

硬度、熱伝導率等が最大のダイヤモンドにおいて、過去に未踏の大きな格子 ミスフィットを伴うドーピングへの自由度が得られれば飛躍的な機能応用展開が期待できる。ダイヤモンド中の主たる不純物は炭素の両隣のホウ素(B)と窒素(N)であり、ダイヤモンド中にBとNが固溶する際、B-Nペアの形成が安定と予想される。育成溶媒の最適化による窒素濃度の制御と精密なホウ素添加量の制御により、1~10ppmレンジでB-N共添加のほぼ無色のダイヤモンド結晶を得た。SIMS分析とESR分析により、結晶中でB-Nペアの形成が示唆される。高圧下でのダイヤモンドへのB-N複合欠陥の導入はドーピング自由度の拡張として期待できる。

Report

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

    (8 results)

All 2023 2022 2021

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results) Presentation (3 results) (of which Invited: 2 results)

  • [Journal Article] Multiple Tin-Vacancy Centers in Diamond with Nearly Identical Photon Frequency and Linewidth2023

    • Author(s)
      Narita Yasuyuki、Wang Peng、Ikeda Keita、Oba Kazuki、Miyamoto Yoshiyuki、Taniguchi Takashi、Onoda Shinobu、Hatano Mutsuko、Iwasaki Takayuki
    • Journal Title

      Physical Review Applied

      Volume: 19 Issue: 2 Pages: 024061-12

    • DOI

      10.1103/physrevapplied.19.024061

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Coherence of a charge stabilised tin-vacancy spin in diamond2022

    • Author(s)
      Gorlitz Johannes、Herrmann Dennis、Fuchs Philipp、Iwasaki Takayuki、Taniguchi Takashi、Rogalla Detlef、Hardeman David、Colard Pierre-Olivier、Markham Matthew、Hatano Mutsuko、Becher Christoph
    • Journal Title

      npj Quantum Information

      Volume: 8 Issue: 1 Pages: 1-9

    • DOI

      10.1038/s41534-022-00552-0

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nitrogen concentration control in diamonds grown in Co-(Fe)-Ti/Al solvents under high-pressure and high-temperature2022

    • Author(s)
      M. Miyakawa, C. Shinei, T. Taniguchi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Issue: 4 Pages: 045507-045507

    • DOI

      10.35848/1347-4065/ac5d7f

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Low-Temperature Spectroscopic Investigation of Lead-Vacancy Centers in Diamond Fabricated by High-Pressure and High-Temperature Treatment2021

    • Author(s)
      P. Wang, T. Taniguchi, Y. Miyamoto, M. Hatano, T. Iwasaki
    • Journal Title

      ACS Photonics

      Volume: 8 Issue: 10 Pages: 2947-2954

    • DOI

      10.1021/acsphotonics.1c00840

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Spin-spin resonance in van der Waals embedded paramagnetic defect2021

    • Author(s)
      N. Chejanovsky, A. Mukherjee*, J. Geng, Y-C. Chen, Y. Kim, A. Denisenko, A. Finkler, T. Taniguchi, K. Watanabe, D.B.R. Dasari*, P. Auburger, A. Gali, J.H. Smet, J. Wrachtrup
    • Journal Title

      Nature Materials

      Volume: 20 Issue: 8 Pages: 1079-1081

    • DOI

      10.1038/s41563-021-00979-4

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 量子センシングのためのダイヤモンド単結晶の欠陥制御2022

    • Author(s)
      谷口 尚
    • Organizer
      第63回高圧討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 半導体結晶の合成と欠陥評価2021

    • Author(s)
      谷口 尚
    • Organizer
      学振125委員会 (光電相互変換)
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 単結晶の欠陥制御と量子機能開拓2021

    • Author(s)
      谷口 尚
    • Organizer
      学振R031 ハイブリッド量子ナノ技術委員会
    • Related Report
      2021 Research-status Report
    • Invited

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Published: 2020-08-03   Modified: 2024-01-30  

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