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2021 Fiscal Year Annual Research Report

Key factors that predominantly affact electrical and mechanical properties of ultrananpcrystalline diamond films

Research Project

Project/Area Number 19H02436
Research InstitutionKyushu University

Principal Investigator

吉武 剛  九州大学, 総合理工学研究院, 教授 (40284541)

Project Period (FY) 2019-04-01 – 2023-03-31
Keywordsナノダイヤモンド / 物理気相成長法 / 同軸型アークプラズマ堆積法 / 薄膜 / 半導体 / コーティング / 硬度 / ヤング弾性率
Outline of Annual Research Achievements

超ナノ微結晶ダイヤモンド/水素化アモルファスカーボン混相(UNCD/a-C:H)膜は,粒径10 nm程度の無数のナノ微結晶ダイヤモンド(UNCD)が水素化アモルファスカーボン(a-C:H)マトリックスに内在する構造をとり,膜中に無数のUNCDの界面・粒界が存在し,それを起源とする特異な光・電子状態が発現する等の特徴を有する。本研究では、UNCD/a-C:Hの光・電気・機械特性と膜構造との相関を調べ、その物性の期限を明らかにすることを目標としている。
負バイアス印加装置の適用により、申請時の60 GPaの膜の硬度を80 GPaまで高めることを実現した。室温プロセスにもかかわらず、CVD多結晶ダイヤ膜と同等の硬度が得られるようになったことは画期的である。これまでは、通常のラマン分光では、ダイヤモンドのラマン散乱光がa-Cマトリックスからの散乱光に埋もれて観測困難であったが、ダイヤモンドの鋭いピークを観測できるようになった。加えて、バッファ層の適用により、Si、Ti等の種々の基板への膜堆積が可能であることを実証した。また、イエナ大学のVolker Deckert教授Grとの共同研究により、近接場ラマン分光法により、ナノダイヤモンド結晶粒を観測できることを実証した。

Current Status of Research Progress
Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

膜堆積中の負バイアス印加の更なる最適化により、膜の硬度が昨年度の硬度72 GPaから80 GPaへ更に高まることがわかった。これは、負バイアス印加によりダイヤモンドの成長が劇的に高められることに因る。室温成長にもかかわらず、多結晶ダイヤモンドに近い膜がえられることは、工業的応用の見地から極めて有益である。

Strategy for Future Research Activity

膜の硬度が80 GPaまで高まることがわかった。これは、負バイアス印加によりダイヤモンドの成長が劇的に高められることに因る。系統的な実験から、バイアス印加の更なる最適化により、硬度が更に高まる可能性が示唆されている。バイアス電源の仕様により、更なる最適化にはバイアス電源に改造を加える必要があった。令和3年度末に改造を終えた。令和4年度は、それを用いて更なるダイヤモンドの成長を実現する。

  • Research Products

    (27 results)

All 2022 2021 Other

All Journal Article (6 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (20 results) (of which Int'l Joint Research: 15 results) Remarks (1 results)

  • [Journal Article] Laser-induced novel ohmic contact formation for effective charge collection in diamond detectors2022

    • Author(s)
      Abubakr Eslam、Ohmagari Shinya、Zkria Abdelrahman、Ikenoue Hiroshi、Yoshitake Tsuyoshi
    • Journal Title

      Materials Science in Semiconductor Processing

      Volume: 139 Pages: 106370~106370

    • DOI

      10.1016/j.mssp.2021.106370

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Correlated Electrical Conductivities to Chemical Configurations of Nitrogenated Nanocrystalline Diamond Films2022

    • Author(s)
      Zkria Abdelrahman、Gima Hiroki、Abubakr Eslam、Mahmoud Ashraf、Haque Ariful、Yoshitake Tsuyoshi
    • Journal Title

      Nanomaterials

      Volume: 12 Pages: 854~854

    • DOI

      10.3390/nano12050854

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Impact of Laser‐Induced Graphitization on Diamond Schottky Barrier Diodes2022

    • Author(s)
      Iwao Tomoki、Sittimart Phongsaphak、Yoshitake Tsuyoshi、Umezawa Hitoshi、Ohmagari Shinya
    • Journal Title

      physica status solidi (a)

      Volume: - Pages: 2100846~2100846

    • DOI

      10.1002/pssa.202100846

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effects of substrate temperature and intermediate layer on adhesion, structural and mechanical properties of coaxial arc plasma deposition grown nanodiamond composite films on Si substrates2021

    • Author(s)
      Ali Ali M.、Egiza Mohamed、Murasawa Koki、Sugita Hiroaki、Deckert-Gaudig Tanja、Deckert Volker、Yoshitake Tsuyoshi
    • Journal Title

      Surface and Coatings Technology

      Volume: 417 Pages: 127185~127185

    • DOI

      10.1016/j.surfcoat.2021.127185

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Diamond/β-Ga2O3 pn heterojunction diodes fabricated by low-temperature direct-bonding2021

    • Author(s)
      Sittimart Phongsaphak、Ohmagari Shinya、Matsumae Takashi、Umezawa Hitoshi、Yoshitake Tsuyoshi
    • Journal Title

      AIP Advances

      Volume: 11 Pages: 105114~105114

    • DOI

      10.1063/5.0062531

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Highly Conductive Layers Formation on Singlecrystalline Diamond2021

    • Author(s)
      Eslam Abubakr,Hiroshi Ikenoue,Tsuyoshi Yoshitake
    • Journal Title

      NEW DIAMOND

      Volume: 143 Pages: 16-17

    • Int'l Joint Research
  • [Presentation] 同軸型アークプラズマ成膜法による導電性超ナノ微結晶ダイヤモンド電極の作製2022

    • Author(s)
      楢木野宏,橋口寛生,吉武剛
    • Organizer
      第69回応用物理学会春季学術講演会,2022年3月22-26日,青山学院大学相模原キャンパス+オンライン開催 22p-P06-11
  • [Presentation] Mechanical and structural properties of Si doped nanodiamond composite coatings deposited on cemented carbide2021

    • Author(s)
      H. Naragino, M. Egiza, H. Ohue, A. M. Ali, K. Murasawa, H. Sugita, Y. Fukui, H. Gonda, M. Sakurai, and T. Yoshitake
    • Organizer
      International Conference on New Diamond and Nano Carbons 2020/2021 (NDNC2020/2021), June 7-9, 2021, (online). 8A-13
    • Int'l Joint Research
  • [Presentation] Polishing of Polycrystalline Diamond Films on WC-Co by KrF-Laser-Induced Surface Modification2021

    • Author(s)
      Y. Katamune, K. Murasawa, T. Kikuchi, T. Yoshitake, and H. Ikenoue
    • Organizer
      International Conference on New Diamond and Nano Carbons 2020/2021 (NDNC2020/2021), June 7-9, 2021, (online). 8A-11
    • Int'l Joint Research
  • [Presentation] Direct Printing of Low-Resistance Ohmic Contacts to p-type Diamond (100) Through Nanosecond Excimer Laser Irradiation2021

    • Author(s)
      E. N. H. Abubakr, S. Ohmagari, A. Zkria, Y. Katamune, H. Ikenoue, and T. Yoshitake
    • Organizer
      International Conference on New Diamond and Nano Carbons 2020/2021 (NDNC2020/2021), June 7-9, 2021, (online). 8A-07
    • Int'l Joint Research
  • [Presentation] Nanosecond pulsed laser treatments of diamond like carbon, nanodiamond composite and singlecrystalline diamond2021

    • Author(s)
      A. Z. Ahmed, E. N. Abubakr, M. B. Egiza, A. Haque, J. Narayan, and T. Yoshitake
    • Organizer
      International Conference on New Diamond and Nano Carbons 2020/2021 (NDNC2020/2021), June 7-9, 2021, (online). 7A-21
    • Int'l Joint Research
  • [Presentation] Structural properties and adhesion enhanced of Nanodiamond Composite Films Deposited on Si Substrates at Room Temperature by Employing Buffer Layer2021

    • Author(s)
      A. Mohamed Ali, M. Egiza, K. Murasawa, H. Sugita, Y. Fukui, H. Gonda, M. Sakurai, and T. Yoshitake
    • Organizer
      International Conference on New Diamond and Nano Carbons 2020/2021 (NDNC2020/2021), June 7-9, 2021, (online). II-06-1
    • Int'l Joint Research
  • [Presentation] Structural and physical characterization of nanodiamond composite thin films synthesized by pulsed-laser ablation method (review)2021

    • Author(s)
      Lama Osman, Abdelrahman Zkria, and Tsuyoshi Yoshitake
    • Organizer
      7th International Exchange and Innovation Conference on Engineering & Sciences (IEICES 2021), Oct. 21-22, 2021, Kyushu University, Oral.
    • Int'l Joint Research
  • [Presentation] Ultrananocrystalline diamond film coated on Titanium substrates by Arc Plasma Deposition Technique for biomedical applications2021

    • Author(s)
      Lama Osman, Abdelrahman Zkria, Hiroshi Naragino and Tsuyoshi Yoshitake
    • Organizer
      International Thin Films Conference, National Taipei University of Technology (TACT 2021), Taipei, Taiwan, Nov. 15-18, 2021, Oral (online). D-O-231
    • Int'l Joint Research
  • [Presentation] Evaluation of N-type nanodiamond films deposited on p-type silicon for optoelectronic applications2021

    • Author(s)
      Abdelrahman Zkria, and Tsuyoshi Yoshitake
    • Organizer
      International Thin Films Conference, National Taipei University of Technology (TACT 2021), Taipei, Taiwan, Nov. 15-18, 2021, Poster (online). C-P-074
    • Int'l Joint Research
  • [Presentation] Thermal stability of nanodiamond composite films coated on Silicon and Tungsten carbide substrates by arc plasma deposition method2021

    • Author(s)
      Abdelrahman Zkria, Eslam Abubakr, Ali Mohamed, and Tsuyoshi Yoshitake
    • Organizer
      International Thin Films Conference, National Taipei University of Technology (TACT 2021), Taipei, Taiwan, Nov. 15-18, 2021, Oral (online). B-O-73
    • Int'l Joint Research
  • [Presentation] p-Type diamond/n-type β-Ga2O3 heterojunctions fabricated using direct-bonding technique2021

    • Author(s)
      Phongsaphak Sittimart, Shinya Ohmagari, Takashi Matsumae, Hitoshi Umezawa, and Tsuyoshi Yoshitake
    • Organizer
      2021 Fall Meeting & Exhibit - The Virtual Experience, Dec 6 - 8, 2021, online EQ19.10.01
    • Int'l Joint Research
  • [Presentation] 二酸化炭素の電気化学還元に向けた導電性超ナノ微結晶ダイヤモンド電極の作製2021

    • Author(s)
      橋口寛生,楢木野宏,吉武剛
    • Organizer
      2021年(令和3年度)応用物理学会九州支部学術講演会/The 5th Asian Applied Physics Conference (Asian-APC),2021 年12月4 日(土) ~ 5 日(日),オンライン開催 4Ap-4
  • [Presentation] Direct contact-writing to diamond through nanosecond pulsed laser irradiation2021

    • Author(s)
      Eslam Abubakr, Shinya Ohmagari, Abdelrahman Zkria, Hiroshi Ikenoue, Tsuyoshi Yoshitake
    • Organizer
      The 6thAsian Applied Physics Conference(Asian-APC), Dec. 4th to 5th, 2021. Oral
    • Int'l Joint Research
  • [Presentation] Nanodiamond composite film coated on Titanium substrates by Arc Plasma Deposition for biomedical applications2021

    • Author(s)
      Lama Osman, Abdelrahman Zkria, Hiroshi Naragino and Tsuyoshi Yoshitake
    • Organizer
      The 6thAsian Applied Physics Conference (Asian-APC), Dec. 4th to 5th, 2021, Oral (Online)
    • Int'l Joint Research
  • [Presentation] PVD nanodiamond composite hard coatings for cutting tools application: structural, mechanical, and tribological properties2021

    • Author(s)
      Mohamed Egiza, Ali Mohamed Ali, Koki Murasawa, Lama Abdelbaset, Hiroshi Naragino, and Tsuyoshi Yoshitake
    • Organizer
      2021年応用物理学会九州支部学術講演会/The 6th Asian Applied Physics Conference (Asian-APC), Dec. 4-5, 2021, Oral (online, invited). 4Ep-2
    • Int'l Joint Research
  • [Presentation] Influence of Negative Bias Frequency on Deposition Processes and Structural Properties of Deposited Nanodiamond Composite Film2021

    • Author(s)
      Ali Mohamed Ali, Koki Murasawa, Hiroaki Sugita, and Tsuyoshi Yoshitake
    • Organizer
      2021年応用物理学会九州支部学術講演会/The 6th Asian Applied Physics Conference (Asian-APC), Dec. 4-5, 2021, Oral (online). 4Dp-5
    • Int'l Joint Research
  • [Presentation] 二酸化炭素の電気化学還元に向けた導電性超ナノ微結晶ダイヤモンド電極の作製2021

    • Author(s)
      橋口寛生,楢木野宏,吉武剛
    • Organizer
      2021年応用物理学会九州支部学術講演会/The 6th Asian Applied Physics Conference (Asian-APC), Dec. 4-5, 2021, Oral (online). 4Ap-4
  • [Presentation] シリコン基板上に成膜されたナノダイヤモンド混相膜の機械的・構造的特性に基板温度及び中間層がもたらす影響2021

    • Author(s)
      S. Saito,A. M. Ali1,M. Egiza,K. Murasawa,H. Sugita,T. Deckert-Gaudig,Volker Deckrt, and T. Yoshitake
    • Organizer
      2021年応用物理学会九州支部学術講演会/The 6th Asian Applied Physics Conference (Asian-APC), Dec. 4-5, 2021, Oral (online). 4Ap-3
  • [Presentation] p-Type diamond/n-type β-Ga2O3 heterojunctions fabricated using direct-bonding technique2021

    • Author(s)
      Phongsaphak Sittimart, Shinya Ohmagari, Takashi Matsumae, Hitoshi Umezawa, and Tsuyoshi Yoshitake
    • Organizer
      2021 MRS Fall Meeting & Exhibit, Dec 6 - 8, 2021, (online). EQ19.10.01
    • Int'l Joint Research
  • [Presentation] 窒素ドープ超ナノ微結晶ダイヤモンド電極の作製と CO2還元特性2021

    • Author(s)
      橋口寛生,楢木野宏,吉武剛
    • Organizer
      第12回半導体材料・デバイスフォーラム,2021年12月11日(土),オンライン開催 O-10
  • [Remarks] 吉武研究室、九州大学大学院総合理工学研究院エネルギー科学部門

    • URL

      http://yoshitake.private.coocan.jp/univ_lab/index-j.htm

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Published: 2022-12-28  

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