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Study of impact ionization process in diamond for developing diamond avalanche diodes

Research Project

Project/Area Number 17K14914
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Nuclear engineering
Research InstitutionNational Institute for Materials Science

Principal Investigator

SHIMAOKA Takehiro  国立研究開発法人物質・材料研究機構, 機能性材料研究拠点, 外来研究員 (80650241)

Project Period (FY) 2017-04-01 – 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: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords衝突電離機構 / ダイオード / リーク電流 / ベータボルタ電池 / 原子力電池 / ダイヤモンド / 衝突イオン化 / 衝突イオン化係数 / ダイヤモンド放射線検出器 / アバランシェダイオード / 絶縁破壊強度 / pin接合
Outline of Final Research Achievements

In this study, we investigated impact ionization phenomena in diamond. We formed diamond pin diodes and evaluated current-voltage characteristics under electron beam irradiation to extract impact ionization coefficient which determines charge multiplication factor in the diodes. Apparent charge multiplication was not observed in the diodes under 2MV/cm of high electric field. The diamond pin diodes showed ~4.5V of high built in bias. Using the bias, we realized diamond radiation sensor operating as photovoltaic mode, and diamond betavoltaic cells with high conversion efficiency.

Academic Significance and Societal Importance of the Research Achievements

本課題実施期間中に、当初目標としていた衝突イオン化係数の導出は達成できなかったものの、ダイヤモンドpn接合の内臓電位に着目した結果、高変換効率を有する原子力電池や外部からの印加電圧なしに動作する放射線センサなど、ダイヤモンドダイオードの新しい応用に関する知見が得られた。これらの成果は過酷環境で動作する耐環境性に優れるダイヤモンドセンサや、宇宙環境などの長期間電源の交換できないリモート環境で使用可能な電池などの実現に寄与するものである。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (9 results)

All 2019 2018 Other

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

  • [Int'l Joint Research] Neel Institute/University Grenoble Alpes(フランス)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Detection of Defects in Diamond by Etch‐Pit Formation2019

    • Author(s)
      Shimaoka Takehiro、Ichikawa Kimiyoshi、Koizumi Satoshi、Watanabe Kenji、Teraji Tokuyuki
    • Journal Title

      physica status solidi (a)

      Volume: 216 Issue: 21 Pages: 1900247-1900247

    • DOI

      10.1002/pssa.201900247

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Diamond photovoltaic radiation sensor using pn junction2018

    • Author(s)
      Shimaoka Takehiro、Koizumi Satoshi、Tanaka Manobu M.
    • Journal Title

      Applied Physics Letters

      Volume: 113 Issue: 9 Pages: 093504-093504

    • DOI

      10.1063/1.5034413

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] {111}ダイヤモンドにおけるホウ素取り込みの基板オフ角依存性2019

    • Author(s)
      嶋岡毅紘、市川公善、小泉聡
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] {111}ホウ素ドープダイヤモンド薄膜成長の基板オフ角依存性評価2019

    • Author(s)
      嶋岡毅紘、市川公善、小泉聡
    • Organizer
      第33回ダイヤモンドシンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] Charge transport characteristic in diamond pn diodes2018

    • Author(s)
      Takehiro Shimaoka, Satoshi Koizumi, Manobu Tanaka
    • Organizer
      New Diamond and Nano Carbon conference (NDNC) 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Diamond pn diodes for charged-particle measurement2018

    • Author(s)
      嶋岡 毅紘
    • Organizer
      Hasselt diamond workshop 2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Charge Transport Characteristic in Diamond pn Diodes2018

    • Author(s)
      嶋岡 毅紘
    • Organizer
      New Diamond and Nano Carbons Conference 2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Remarks] AIP Scilight: Vol 2018, No 35

    • URL

      https://aip.scitation.org/doi/full/10.1063/1.5053688

    • Related Report
      2018 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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