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Operand observation of electric potentials in solar cells by high-precision electron holography

Research Project

Project/Area Number 18K13795
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 21050:Electric and electronic materials-related
Research InstitutionJapan Fine Ceramics Center

Principal Investigator

Anada Satoshi  一般財団法人ファインセラミックスセンター, その他部局等, 上級研究員 (40772380)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords太陽電池 / 電子線ホログラフィー / オペランド観察 / 機械学習 / スパースモデリング / 光起電力効果 / その場観察 / 光照射 / 電圧印加
Outline of Final Research Achievements

I developed the specimen holder enabling light irradiation and voltage application simultaneously to a specimen in transmission electron microscopy to achieve operand observation of electric potentials in solar cells by electron holography. I used this holder to observe electrically-biased GaAs solar cells in the dark with electron holography and succeeded in measuring electric potential changes in the solar cells accurately and precisely. Furthermore, I applied this holder to the observation of the GaAs cells under artificial sunlight and quantitatively visualized potential changes due to the photovoltaic effect.

Academic Significance and Societal Importance of the Research Achievements

光起電力効果に伴う電位分布変化の観察に成功した本研究の成果は,太陽電池の動作過程や発光メカニズムを解明する上で重要である.また,太陽電池の高性能化にも役立つことも期待できる.本研究で開発した透過電子顕微鏡内光照射技術は,太陽電池だけでなく,光触媒反応や光誘起相転移など様々な光誘起現象のその場観察への応用も期待できる.

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (16 results)

All 2021 2020 2019 2018

All Journal Article (7 results) (of which Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results)

  • [Journal Article] Phase-Shifting Electron Holography for Accurate Measurement of Potential Distributions in Organic and Inorganic Semiconductors2021

    • Author(s)
      Kazuo Yamamoto, Satoshi Anada, Takeshi Sato, Noriyuki Yoshimoto, Tsukasa Hirayama
    • Journal Title

      Microscopy

      Volume: 70 Issue: 1 Pages: 24-38

    • DOI

      10.1093/jmicro/dfaa061

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Direct visualization of the photovoltaic effect in a single-junction GaAs cell via in situ electron holography2020

    • Author(s)
      Anada Satoshi、Hirayama Tsukasa、Sasaki Hirokazu、Yamamoto Kazuo
    • Journal Title

      Journal of Applied Physics

      Volume: 128 Issue: 24 Pages: 243101-243101

    • DOI

      10.1063/5.0030728

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Simulation-Trained Sparse Coding for High-Precision Phase Imaging in Low-Dose Electron Holography2020

    • Author(s)
      Anada Satoshi、Nomura Yuki、Hirayama Tsukasa、Yamamoto Kazuo
    • Journal Title

      Microscopy and Microanalysis

      Volume: 26 Issue: 3 Pages: 429-438

    • DOI

      10.1017/s1431927620001452

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sparse coding and dictionary learning for electron hologram denoising2019

    • Author(s)
      Anada Satoshi、Nomura Yuki、Hirayama Tsukasa、Yamamoto Kazuo
    • Journal Title

      Ultramicroscopy

      Volume: 206 Pages: 112818-112818

    • DOI

      10.1016/j.ultramic.2019.112818

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Visualization of different carrier concentrations in n-type-GaN semiconductors by phase-shifting electron holography with multiple electron biprisms2019

    • Author(s)
      Yamamoto Kazuo、Nakano Kiyotaka、Tanaka Atsushi、Honda Yoshio、Ando Yuto、Ogura Masaya、Matsumoto Miko、Anada Satoshi、Ishikawa Yukari、Amano Hiroshi、Hirayama Tsukasa
    • Journal Title

      Microscopy

      Volume: 69 Issue: 1 Pages: 1-10

    • DOI

      10.1093/jmicro/dfz037

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Electron Hologram Denoising via Sparse Coding and Dictionary Learning2019

    • Author(s)
      Anada Satoshi、Nomura Yuki、Hirayama Tsukasa、Yamamoto Kazuo
    • Journal Title

      Microscopy and Microanalysis

      Volume: 25 Issue: S2 Pages: 52-53

    • DOI

      10.1017/s1431927619000990

    • Related Report
      2019 Research-status Report
  • [Journal Article] Accurate measurement of electric potentials in biased GaAs compound semiconductors by phase-shifting electron holography2018

    • Author(s)
      Anada Satoshi、Yamamoto Kazuo、Sasaki Hirokazu、Shibata Naoya、Matsumoto Miko、Hori Yujin、Kinugawa Kouhei、Imamura Akihiro、Hirayama Tsukasa
    • Journal Title

      Microscopy

      Volume: 68 Issue: 2 Pages: 159-166

    • DOI

      10.1093/jmicro/dfy131

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 電子線ホログラムのノイズ低減におけるスパースコーディング適用範囲の拡張2020

    • Author(s)
      穴田智史,野村優貴,平山司,山本和生
    • Organizer
      日本顕微鏡学会第76回学術講演会
    • Related Report
      2020 Annual Research Report 2019 Research-status Report
  • [Presentation] 電子線ホログラフィーによる半導体内部ポテンシャル分布の精密計測2020

    • Author(s)
      穴田智史
    • Organizer
      2019年度 日本顕微鏡学会 超高分解能顕微鏡法分科会研究会
    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Invited
  • [Presentation] スパースコーディングによる電子線ホログラムの雑音低減2019

    • Author(s)
      穴田智史,野村優貴,平山司,山本和生
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Electron Hologram Denoising via Sparse Coding and Dictionary Learning2019

    • Author(s)
      S. Anada, Y. Nomura, T. Hirayama, K. Yamamoto
    • Organizer
      Microscopy & Microanalysis 2019 Meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Accurate Measurement of Electric Potentials in P-N Junctions by Phase-Shifting Electron Holography and Sparse Coding2019

    • Author(s)
      穴田智史,野村優貴,平山司,佐々木宏和,柴田直哉,山本和生
    • Organizer
      日本顕微鏡学会第75回学術講演会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] スパースコーディングを用いた電子線ホログラムのノイズ除去2019

    • Author(s)
      穴田智史,野村優貴,平山司,山本和生
    • Organizer
      日本顕微鏡学会第75回学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Accurate potential measurement of GaAs semiconductors by applying phase-shifting electron holography to a wedge-shaped specimen2019

    • Author(s)
      S. Anada, K. Yamamoto, H. Sasaki, N. Shibata, M. Matsumoto, Y. Hori, K. Kinugawa, A. Imamura, T. Hirayama
    • Organizer
      International Workshop of Ultra High-Resolution on Microscopy
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Accurate measurement of electric potentials in p-n junctions by phase-shifting electron holography and sparse coding2019

    • Author(s)
      Anada Satoshi、Nomura Yuki、Tsukasa Hirayama、Sasaki Hirokazu、Shibata Naoya、Yamamoto Kazuo
    • Organizer
      日本顕微鏡学会第75回学術講演会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Accurate Potential Measurement of a P-N Junction by Applying Phase-Shifting Electron Holography to a Wedge-Shaped Specimen2019

    • Author(s)
      Anada Satoshi、Yamamoto Kazuo、Sasaki Hirokazu, Shibata Naoya、Matsumoto Miko、Hori Yujin、Kinugawa Kouhei、Imamura Akihiro、Hirayama Tsukasa
    • Organizer
      The 6th International Symposium on Advanced Microscopy and Theoretical Calculations (AMTC6)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2022-01-27  

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