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Development of atomic-level structure fabrication technique for diamond MOSFETs with high mobility and high voltage

Research Project

Project/Area Number 21H01363
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 21050:Electric and electronic materials-related
Research InstitutionKanazawa University

Principal Investigator

Matsumoto Tsubasa  金沢大学, ナノマテリアル研究所, 准教授 (00739568)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2023: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2021: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Keywordsダイヤモンド / 半導体 / MOSFET / エッチング / CVD / パワーデバイス / 炭素固溶反応
Outline of Research at the Start

極めて高いチャネル移動度・耐圧が期待できる反転層ダイヤモンドMOSFETによる省エネ社会構築を目指し、ダイヤモンド半導体の新規デバイス作製プロセスの開発により、構造最適化を行い、SiCを超える移動度と耐圧を達成する。具体的には、チャネル部における原子レベルのダイヤモンド表面荒れという高性能化を阻害する課題を解決するため、Si半導体等の従来からあるデバイス作製プロセスと、独自のCVD(化学気相成長)によるラテラル成長技術、CVDのノウハウ、Ni触媒エッチングによるダイヤモンド加工技術を組み合わせることで、新規デバイス作製プロセスの開発に取り組み、SiC-MOSFETを超える特性を達成する。

Outline of Final Research Achievements

In diamond MOSFETs, the formation of source and drain regions using the current selective growth technique through a metal mask poses a process problem of fine roughness in the channel region. In response to this problem, this study proposed and demonstrated a method that exploits the growth rate difference due to the underlying substrate, a lateral growth method that grows only in the in-plane direction, and a damascene-like method that exploits the property of Ni to form a solid solution with carbon. As a result, the operation of MOSFETs has been successfully demonstrated with each method, and mobility has been improved by nearly an order of magnitude compared to conventional features. However, problems with each method have also become apparent.

Academic Significance and Societal Importance of the Research Achievements

本研究によって、デバイス作製プロセスに幅を持たせることができた。開発した各デバイス作製プロセスは、課題も多く抽出された。それでも「ダイヤモンド半導体をSiと同等以上に構造を加工・制御することは可能なのか」という最初に立てた問いに対する答えとして、「ダイヤモンド半導体もSiと同等の構造を加工することはでき、各プロセスを高度化することで、Si以上に制御することも可能」という解が得られたと考えている。開発したデバイス作製プロセスは、目指すパワーデバイスだけではなく、量子デバイスや光デバイスにも広く応用され、ダイヤモンドエレクトロニクス産業創出に寄与すると期待している。

Report

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

    (22 results)

All 2024 2023 2022 2021

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (19 results) (of which Int'l Joint Research: 12 results,  Invited: 4 results)

  • [Journal Article] Fabrication and characterization of diamond (100) p+-i-n+ diodes with heavily nitrogen-doped films2024

    • Author(s)
      Matsushima Yuki、Mura Mikiya、Matsumoto Tsubasa、Ichikawa Kimiyoshi、Hayashi Kan、Yamasaki Satoshi、Inokuma Takao、Yoshikawa Taro、Makino Toshiharu、Tokuda Norio
    • Journal Title

      Diamond and Related Materials

      Volume: 145 Pages: 111116-111116

    • DOI

      10.1016/j.diamond.2024.111116

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Selectively buried growth of heavily B doped diamond layers with step-free surfaces in N doped diamond (1 1 1) by homoepitaxial lateral growth2022

    • Author(s)
      Kobayashi Kazuki、Zhang Xufang、Makino Toshiharu、Matsumoto Tsubasa、Inokuma Takao、Yamasaki Satoshi、Nebel Christoph E.、Tokuda Norio
    • Journal Title

      Applied Surface Science

      Volume: 593 Pages: 153340-153340

    • DOI

      10.1016/j.apsusc.2022.153340

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Fabrication of inversion p-channel MOSFET with a nitrogen-doped diamond body2021

    • Author(s)
      Matsumoto Tsubasa、Yamakawa Tomoya、Kato Hiromitsu、Makino Toshiharu、Ogura Masahiko、Zhang Xufang、Inokuma Takao、Yamasaki Satoshi、Tokuda Norio
    • Journal Title

      Applied Physics Letters

      Volume: 119 Issue: 24 Pages: 242105-242105

    • DOI

      10.1063/5.0075964

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] New structure of inversion channel diamond MOSFET for high power operation2024

    • Author(s)
      Tsubasa Matsumoto, Kai Sato, Yuto Nakamura, Traore Aboulaye, Toshiharu Makino, Hiromitsu Kato, Masahiko Ogura, Kimiyoshi Ichikawa, Kan Hayashi, Takao Inokuma, Satoshi Yamasaki, Norio Tokuda
    • Organizer
      Kanazawa Diamond Workshop 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Proposal of inversion channel diamond MOSFET with drift layer-free for low-loss and high-voltage2024

    • Author(s)
      Tsubasa Matsumoto, Kai Sato, Yuto Nakamura, Toshiharu Makino, Hiromitsu Kato, Masahiko Ogura, Traore Aboulaye, Kimiyoshi Ichikawa, Kan Hayashi, Takako Inokuma, Satoshi Yamasaki, Norio Tokuda
    • Organizer
      Hasselt Diamond Workshop 2024 - SBDD XXVIII
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] n型ダイヤモンド半導体における不純物濃度と接触抵抗の関係2024

    • Author(s)
      松本翼,村光希哉,松島優希,宮崎泰一,林寛1,市川公善1,牧野俊晴2,猪熊孝夫1, 山崎聡1,徳田規夫
    • Organizer
      第71回応用物理学会春季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Evaluation of Contact Resistance of Diamond MOSFETs2023

    • Author(s)
      Kai Sato1, Kimiyoshi Ichikawa1, Kan Hayashi1, Hiromitsu Kato2 , Toshiharu Makino2 Masahiko Ogura2, Takao Inokuma1, Satoshi Yamasaki1, Norio Tokuda1, Tsubasa Matsumoto
    • Organizer
      The 9th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Lateral growth over holes on diamond (111) substrate2023

    • Author(s)
      Kouryou Morishita1, Kimiyoshi Ichikawa2, Kan Hayashi1,2, Tsubasa Matsumoto, Satoshi Yamasaki2, Takao Inokuma1,2, Norio Tokuda
    • Organizer
      The 9th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Niの炭素固溶反応による平坦化技術を応用した 埋込ソース・ドレイン構造を有するMOSFETの作製と実証2023

    • Author(s)
      加納翼1 佐藤解1 林寛1,2 市川公善2 吉川太朗2 猪熊孝夫1 山崎聡, 徳田規夫, 松本翼
    • Organizer
      第37回 ダイヤモンドシンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] 高濃度窒素ドーピングによる 接触抵抗低減とダイヤモンド(100) p+-i-n+ダイオードの実証2023

    • Author(s)
      松島 優希, 村 光希哉, 松本 翼, 市川 公善, 林 寛, 山崎 聡, 猪熊 孝夫, 徳田 規夫
    • Organizer
      第37回 ダイヤモンドシンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] ダイヤモンドMOSFETにおけるドリフト抵抗フリー構造の提案2023

    • Author(s)
      松本翼、佐藤解、中村勇斗、Traore Aboulaye、牧野俊晴、加藤宙光3、 小倉政彦3 、市川公善1 、林寛1 、猪熊孝夫1 、山﨑聡1 、德田規夫
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Advances in diamond MOSFET technologies2023

    • Author(s)
      Norio Tokuda, Kazuki Kobayashi, Kan Hayashi, Kimiyoshi Ichikawa, Tsubasa Matsumoto, Takao Inokuma, Satoshi Yamasaki, Xufang Zhang1†, Hiromitsu Kato2, Masahiko Ogura, Toshiharu Makino, Daisuke Takeuchi2, Christoph E. Nebel
    • Organizer
      E-MRS 2023 Spring Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Fabrication of Schottky-pn diodes using lightly nitrogen doped diamond film2023

    • Author(s)
      Shota Abe1, Kai Sato1, Yuki Matsushima1, Kimiyoshi Ichikawa2, Kan Hayashi, Satoshi Yamasaki, Takao Inokuma, Norio Tokuda, Tsubasa Matsumoto
    • Organizer
      The 9th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Fabrication of PIN Diodes with Heavily Nitrogen Doped Diamond Film2023

    • Author(s)
      Yuki Matsushima, Mikiya Mura, Tsubasa Matsumoto, Kimiyoshi Ichikawa, Kan Hayashi1,2, Satoshi Yamasaki2, Takao Inokuma1, Norio Tokuda
    • Organizer
      The 9th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] T. Kano, T. Matsumoto, X. Zhang, T. Inokuma, S. Yamasaki and N. Tokuda2022

    • Author(s)
      Formation of Buried Heavily Doped Layers on Diamond (111) Surface by Solid Solution Reaction of Carbon into Nickel
    • Organizer
      15th International Conference on New Diamond and Nano Carbons
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] X. Zhang, T. Matsumoto, M. Sometani, M. Ogura, T. Makino, D. Takeuchi, C.E. Nebel, T. Inokuma, S. Yamasaki, N. Tokuda2022

    • Author(s)
      Impact of wet annealing treatments on Al2O3/diamond MOS interface
    • Organizer
      15th International Conference on New Diamond and Nano Carbons
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] K. Kobayashi, X. Zhang, T. Matsumoto, T. Inokuma, S. Yamasaki, C.E. Nebel and N. Tokuda2022

    • Author(s)
      Selectively buried growth of heavily B doped diamond layers in N doped diamond (111) with atomically flat surfaces
    • Organizer
      15th International Conference on New Diamond and Nano Carbons
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] X. Zhang, T. Matsumoto, M. Sometani, M. Ogura, T. Makino, D. Takeuchi, C.E. Nebel, T. Inokuma, S. Yamasaki, N. Tokuda2022

    • Author(s)
      Recent Progress in Electrical Characterization of Al2O3/Diamond Interface
    • Organizer
      14th Topical Workshop on Heterostructure Microelectronics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 佐藤 解, 市川 公善, 林 寛, 小倉 政彦, 牧野 俊晴, 加藤 宙光, 竹内 大輔,猪熊 孝夫, 山崎 聡, 徳田 規夫, 松本 翼2022

    • Author(s)
      表面終端処理、酸化膜堆積の連続プロセスによるダイヤモンドMOSFETのヒステリシス低減
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 松本 翼,佐藤 解,中村 勇斗, Traore Aboulaye,牧野 俊晴,加藤 宙光,小倉 政彦, 市川 公善,林 寛,猪熊 孝夫,山崎 聡,德田 規夫2022

    • Author(s)
      ダイヤモンドMOSFETにおけるドリフト抵抗フリー構造の提案
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Diamond MOSFET for Next-Generation Power Devices2021

    • Author(s)
      Tsubasa Matsumoto, Tomoya Yamakawa, Xufang Zhang, Hiromitsu Kato, Toshiharu Makino, Masahiko Ogura, Daisuke Takeuchi, Takao Inokuma, Satoshi Yamasaki, Norio Tokuda
    • Organizer
      3D PEIM'2021 symposium
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] チャネル部追成長による反転層ダイヤモンドMOSFETの電気特性改善2021

    • Author(s)
      山河 智哉,松本翼, 猪熊 孝夫,山崎 聡,張 旭芳, 加藤宙光, 小倉政彦, 牧野俊晴, C.E.Nebel, 徳田 規夫
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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