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The development of ab initio method for applications to organic optoelectronic materials

Research Project

Project/Area Number 19K05255
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 29010:Applied physical properties-related
Research InstitutionNational Institutes for Quantum Science and Technology (2021-2022)
Institute for Molecular Science (2019-2020)

Principal Investigator

Fujita Takatoshi  国立研究開発法人量子科学技術研究開発機構, 量子生命科学研究所, 主幹研究員 (70767970)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords大規模励起状態計算 / フラグメント分子軌道法 / GW/Bethe-Salpeter / 励起子 / 電子励起状態 / 有機半導体 / GW近似 / Bethe-Salpeter方程式 / 有機薄膜太陽電池 / 大規模電子状態計算 / GW / 有機太陽電池 / GW法
Outline of Research at the Start

本申請では、第一原理電子状態理論であるフラグメント分子軌道法とグリーン関数理論であるGW法に基づいて、有機材料の光励起物性予測に関する革新的手法を提案する。応用計算の対象として太陽電池やレーザーなど革新的デバイスとして期待されている系を選ぶ。電荷分離・電荷再結合や励起子緩和過程などの、デバイス性能に関わる素過程を解析するための理論基盤を確立する。本研究で光励起物性予測のための信頼性の高い計算手法が確立されることにより合理的デバイス開発への道のりが拓ける。

Outline of Final Research Achievements

In this research project, we have developed a novel method for the calculation of electronic excited states of organic semiconductor materials, by implementing the GW/Bethe-Salpeter equation (GW/BSE) method within the fragment molecular orbital (FMO) method. In order to implement the fragment-based GW/BSE method, we newly proposed (1) fragmentation approximation for the polarization function, (2) ΔCOHSEX approximation for environmental induced polarization effects, and (3) excited state with an exciton model. The program developed in this research project enables GW/BSE calculations for systems with more than several thousand atoms. Therefore, the present method allows for highly accurate excited-state calculations for realistic disordered molecular aggregates, including organic electronic devices.

Academic Significance and Societal Importance of the Research Achievements

本研究により、数千原子以上の系に対するGW/BSE計算が可能となった。従来の実装のGW/BSE法では数百原子以上の系の計算は困難であったことを考えると、大きな進歩であるといえる。本手法は乱れた分子集合体の励起状態の高精度計算が可能であるため、有機半導体材料のエネルギー準位や光物性予測に非常に有用である。さらに、本手法では励起状態ハミルトニアンを透熱基底で計算しているため、電子励起状態のモデルハミルトニアンの系統的な導出も可能である。つまり、本手法をベースにした励起状態の実時間発展シミュレーションも将来的には実現できると考えている。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (20 results)

All 2023 2022 2021 2019

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (14 results) (of which Int'l Joint Research: 3 results,  Invited: 8 results) Book (2 results)

  • [Journal Article] Fragment-Based Excited-State Calculations Using the GW Approximation and the Bethe-Salpeter Equation2021

    • Author(s)
      Takatoshi Fujita, Yoshifumi Noguchi
    • Journal Title

      The Journal of Physical Chemistry A

      Volume: 125 Issue: 49 Pages: 10580-10592

    • DOI

      10.1021/acs.jpca.1c07337

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Revisiting the Charge-Transfer States at Pentacene/C60 Interfaces with the GW/Bethe-Salpeter Equation Approach2021

    • Author(s)
      Takatoshi Fujita, Yoshifumi Noguchi, Takeo Hoshi
    • Journal Title

      Materials

      Volume: 13 Issue: 12 Pages: 2728-2728

    • DOI

      10.3390/ma13122728

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Charge-transfer excited states in the donor/acceptor interface from large-scale GW calculations2019

    • Author(s)
      Takatoshi Fujita, Yoshifumi Noguchi, Takeo Hoshi
    • Journal Title

      The Journal of chemical physics

      Volume: 115 Issue: 11 Pages: 114109-114109

    • DOI

      10.1063/1.5113944

    • NAID

      120006891002

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Numerical aspect of large-scale electronic state calculation for flexible device material2019

    • Author(s)
      Takeo Hoshi, Hiroto Imachi, Akiyoshi Kuwata, Kohsuke Kakuda, Takatoshi Fujita, Hiroyuki Matsui
    • Journal Title

      Japan Journal of Industrial and Applied Mathematics

      Volume: 366 Issue: 2 Pages: 685-698

    • DOI

      10.1007/s13160-019-00358-2

    • NAID

      210000172726

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 大規模電子状態計算を用いた有機半導体材料の光電子物性2023

    • Author(s)
      藤田 貴敏
    • Organizer
      スーパーコンピュータワークショップ2022「 複雑電子状態の理論・計算科学」
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] P3HT/PCBMにおける電荷分離ダイナミクスと分光シグナルの理論解析2023

    • Author(s)
      藤田 貴敏
    • Organizer
      第70回応用物理学会 春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 光電変換過程の量子ダイナミクスと時間分解分光2023

    • Author(s)
      藤田 貴敏
    • Organizer
      計算物質科学人材育成コンソーシアム(PCoMS)シンポジウム &計算物質科学スーパーコンピュータ共用事業報告会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 電子状態計算と時間分解分光によるP3HT/PCBMの電荷分離の解析2022

    • Author(s)
      藤田貴敏
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 材料系・バイオ系の励起子ダイナミクスの理解と制御に向けて2022

    • Author(s)
      藤田貴敏
    • Organizer
      計算物質科学人材育成コンソーシアム(PCoMS)シンポジウム &計算物質科学スーパーコンピュータ共用事業報告会 2021
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 大規模励起状態計算による有機半導体材料の電子物性予測2021

    • Author(s)
      藤田貴敏
    • Organizer
      M&BE分科会 6月研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] フラグメント分子軌道法の開発と有機半導体材料への応用2019

    • Author(s)
      藤田貴敏
    • Organizer
      物性研究所スパコン共同利用・CCMS合同研究会「計算物質科学の新展開」
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Theoretical Investigation on Effects of Polarization and Delocalization on Excited States in Organic Semiconductors2019

    • Author(s)
      Takatoshi Fujita
    • Organizer
      CEMS Topical Meeting on Organic Photoelectrons: Theory, Materials, Interfaces, and Spectroscopy
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Charge Transfer States at the Organic Donor-Acceptor Interface from the Many-Body Green Function Method2019

    • Author(s)
      Takatoshi Fujita
    • Organizer
      IMS-IAMS Joint Discussion
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of the Large-Scale GW+Bethe-Salpeter Equation Method Based on Fragment Molecular Orbital Method for Applications to Organic Materials2019

    • Author(s)
      Takatoshi Fujita
    • Organizer
      APATCC 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] FMO法に基づいたGW+BSE法の開発と有機材料への応用2019

    • Author(s)
      藤田貴敏
    • Organizer
      第13回分子科学討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] フラグメント分子軌道法に基づいたGW法の開発と有機材料への応用2019

    • Author(s)
      藤田貴敏
    • Organizer
      第22回理論化学討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] First-Principles Investigation of Interfacial Charge-Transfer States at the Pentacene/C60 Heterojunctions2019

    • Author(s)
      Takatoshi Fujita
    • Organizer
      10th International Conference on Molecular Electronics & BioElectronics
    • Related Report
      2019 Research-status Report
  • [Presentation] Development of the Fragment-Based GW+Bethe-Salpeter Equation Method for Applications to Organic Materials2019

    • Author(s)
      Takatoshi Fujita
    • Organizer
      ISTCP 2019
    • Related Report
      2019 Research-status Report
  • [Book] "First-Principles Investigations of Electronically Excited States in Organic Semiconductors", In: Organic Solar Cells (S. Hiramoto, S. Izawa Eds.)2021

    • Author(s)
      Takatoshi Fujita
    • Total Pages
      267
    • Publisher
      Springer, Singapore
    • ISBN
      9789811591136
    • Related Report
      2020 Research-status Report
  • [Book] "FMO-Based Investigations of Excited-State Dynamics in Molecular Aggregates" In: Recent Advances of the Fragment Molecular Orbital Method (Y. Mochizuki, S. Tanaka, K. Fukuzawa, Eds.)2021

    • Author(s)
      Takatoshi Fujita, Takeo Hoshi
    • Total Pages
      616
    • Publisher
      Springer, Singapore
    • ISBN
      9789811592355
    • Related Report
      2020 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

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