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Development of high mobility polored organic semiconductors for organic radiation detectors

Research Project

Project/Area Number 19K05336
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 31010:Nuclear engineering-related
Research InstitutionNational Institute of Technology, Toyama College

Principal Investigator

Yamagishi Masakazu  富山高等専門学校, 物質化学工学科, 講師 (20615827)

Co-Investigator(Kenkyū-buntansha) 高田 英治  富山高等専門学校, その他部局等, 教授 (00270885)
岡本 敏宏  東京大学, 大学院新領域創成科学研究科, 准教授 (80469931)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords有機半導体単結晶 / 分子ダイポール / 放射線検出 / 有機半導体 / カルコゲノフェン官能基 / 有機放射線検出器 / 含硫官能基 / 新規有機半導体 / 分子内ダイポール / 溶解度の向上 / 有機半導体検出器 / 極性分子 / 移動度 / ヘテロ元素
Outline of Research at the Start

柔らかく放射線像に写らない有機化合物を用いた身体に身につけるフレキシブル放射線検出器が注目を集めている.しかし,放射線検出用分子の共通の選定指針はなく,材料の開発も行われておらず,十分な放射線検出能が得られていない.そこで本研究では,放射線検出を目的とした有機化合物を系統的に合成し,放射線検出能と分子の性質を比較し,放射線検出に特化した有機半導体の設計指針を明らかとするとともに,有機半導体検出器の性能向上を目論む.

Outline of Final Research Achievements

In this work, toward organic direct radiation detectors, new organic semiconductors with high content rate of sulfur atoms were developed and the mechanism of organic radiation detectors were studied. The new organic semiconductors have substituents including sulfur atoms that interact with radiation rays more effectively than carbon atoms. The organic semiconductors cannot show detection ability had been expected, but the new method to simulate aggregation structures of organic semiconductors were established during the material development. As their detection mechanism, it was unveiled that radiation ray is detected only at sections extremely near to a positive electrode.

Academic Significance and Societal Importance of the Research Achievements

本研究で開発した有機半導体は期待した放射線検出能を示さなかったが,研究の過程で得られた放射線検出用の有機半導体および放射線検出のメカニズムに関する知見は,今後の放射線検出用有機半導体の分子設計やデバイス設計にとって有用である.また,得られた有機半導体の集合体構造のシミュレーション手法は,放射線検出以外の用途にとっても重要な高移動度の有機半導体を効率的に探索できるようになるため,有機エレクトロニクスの開発を大きく促進させる.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (2 results)

All 2020 2019

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

  • [Journal Article] Bent-Shaped p-Type Small Molecule Organic Semiconductors: A Molecular Design Strategy for Next-Generation Practical Applications2020

    • Author(s)
      T. Okamoto, C. Yu, C. Mitsui, M. Yamagishi, H. Ishii, J. Takeya
    • Journal Title

      Journal of the American Chemical Society

      Volume: - Issue: 20 Pages: 9083-9096

    • DOI

      10.1021/jacs.9b10450

    • NAID

      120007168343

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] ルブレン/アクセプタ/金属界面における接触抵抗の経時および熱ストレスによる変化2019

    • Author(s)
      嘉藤幹也、大井綾子、山本廉、山岸正和
    • Organizer
      2019年度北陸地区講演会と研究発表会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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