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Direct investigation on organic EL mechanism by operand transient spectroscopy

Research Project

Project/Area Number 18K05267
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 35030:Organic functional materials-related
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Hosokai Takuya  国立研究開発法人産業技術総合研究所, 計量標準総合センター, 主任研究員 (90613513)

Co-Investigator(Kenkyū-buntansha) 宮前 孝行  千葉大学, 大学院工学研究院, 教授 (80358134)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords時間分解分光 / 過渡吸収分光法 / 和周波分光法 / 電界励起 / 有機デバイス / デバイス駆動ダイナミクス / 有機EL / 励起状態ダイナミクス / 電界発光 / キャリアダイナミクス / オペランド分光計測
Outline of Final Research Achievements

In order to study both the charge carrier and exciton dynamics under OLED device operation, we have developed operand transient absorption spectroscopy and sum-frequency generation (SFG) spectroscopy. For OLED devices based on triplet-triplet annihilation (TTA), we confirmed the behavior of injection at the interface between the light emitting layer and the electron block layer, and charge carrier dynamics after the injection from the electron Al electrode. The light emitting mechanism of advanced light materials, such as thermally activated delayed fluorescent materials, room-temperature phosphorescent materials, and exciplex thin films, was studied by the transient absorption method.

Academic Significance and Societal Importance of the Research Achievements

高度情報化社会および省エネルギー社会を実現するためには、既存のSiをベースとするデバイスの高性能化だけでなく、全く新しい形のデバイスの作製が不可欠です。有機ELに代表される、有機半導体を用いたデバイスはその可能性を秘めていますが、未だに多くの動作機構の詳細が分かっておりません。本研究では、有機半導体をベースとする各種の有機デバイスの動作を直接調べるための計測技術の開発を行いました。有機ELや有機トランジスタ中の電荷キャリアの流れを可視化も含めて評価することができており、今後は本技術が各種有機デバイスの高性能化に寄与していくことが期待されます。

Report

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

    (25 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (1 results) Journal Article (9 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 8 results,  Open Access: 1 results) Presentation (15 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Int'l Joint Research] Sabaragamuwa University of Sri Lanka(スリランカ)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Direct imaging of electric field behavior in 2,7-diphenyl[1]benzothieno[3,2-b][1]benzothiophene organic field-effect transistors by sum-frequency generation imaging microscopy2021

    • Author(s)
      Katagiri Chiho、Miyamae Takayuki、Li Hao、Yang Fangyuan、Baldelli Steven
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 23 Issue: 8 Pages: 4944-4950

    • DOI

      10.1039/d0cp06407f

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Development of fluorinated benzils and bisbenzils as room-temperature phosphorescent molecules2020

    • Author(s)
      Yamada Shigeyuki、Higashida Takuya、Wang Yizhou、Morita Masato、Hosokai Takuya、Maduwantha Kaveendra、Koswattage Kaveenga Rasika、Konno Tsutomu
    • Journal Title

      Beilstein Journal of Organic Chemistry

      Volume: 16 Pages: 1154-1162

    • DOI

      10.3762/bjoc.16.102

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Exciton Dissociation and Electron Transfer at a Well-defined Organic Interface of an Epitaxial C60 layer on a Pentacene Single Crystal2020

    • Author(s)
      Iwasawa, Masato; Tsuruta, Ryohei; Nakayama, Yasuo; Sasaki, Masahiro; Hosokai, Takuya; Lee, Sunghee; Fukumoto, Keiki; *Yamada, Yoichi
    • Journal Title

      J. Phys. Chem. C

      Volume: 124 Issue: 25 Pages: 13572-13579

    • DOI

      10.1021/acs.jpcc.0c02796

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Role of Spontaneous Orientational Polarization in Organic Donor?Acceptor Blends for Exciton Binding2020

    • Author(s)
      Ueda Yuuhi、Nakanotani Hajime、Hosokai Takuya、Tanaka Yuya、Hamada Hokuto、Ishii Hisao、Santo Shuhei、Adachi Chihaya
    • Journal Title

      Advanced Optical Materials

      Volume: 8 Issue: 21 Pages: 2000896-2000896

    • DOI

      10.1002/adom.202000896

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Excited-State Dynamics of Room-Temperature Phosphorescent Organic Materials Based on Monobenzil and Bisbenzil Frameworks2020

    • Author(s)
      Maduwantha Kaveendra、Yamada Shigeyuki、Koswattage Kaveenga Rasika、Konno Tsutomu、Hosokai Takuya
    • Journal Title

      Materials

      Volume: 13 Issue: 17 Pages: 3904-3904

    • DOI

      10.3390/ma13173904

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] H2O-Induced Crystallization of Organic Luminescent Thin Films by Direct Film Storage in a High Vacuum2020

    • Author(s)
      Hosokai Takuya、Nakanishi Taiyo、Honda Akinori、Akaike Kouki、Tsuruta Ryohei、Itoh Hiroshi、Nakanotani Hajime、Nakayama Yasuo
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 124 Issue: 45 Pages: 24919-24929

    • DOI

      10.1021/acs.jpcc.0c08968

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Relationship between the surface structure of the gate insulator and the performance of organic thin-film transistors2020

    • Author(s)
      Katagiri Chiho、Akaike Kouki、Miyamae Takayuki
    • Journal Title

      Organic Electronics

      Volume: 86 Pages: 105928-105928

    • DOI

      10.1016/j.orgel.2020.105928

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 熱活性化遅延蛍光材料のスピン反転メカニズム2020

    • Author(s)
      細貝拓也
    • Journal Title

      応用物理学会 有機分子・バイオエレクトロニクス(M&BE)分科会会誌

      Volume: 32 Pages: 61-64

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Direct observations of the charge behavior of a high-efficiency blue organic light-emitting diode under operating conditions using electric-field-induced doubly resonant sum-frequency-generation vibrational spectroscopy2019

    • Author(s)
      T. Sato, T. Miyamae, H. Ohata, T. Tsutsui
    • Journal Title

      Organic Electronics,

      Volume: 74 Pages: 118-125

    • DOI

      10.1016/j.orgel.2019.07.008

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 和周波分光による有機界面のオペランド計測2021

    • Author(s)
      宮前孝行
    • Organizer
      レーザー学会第41回年次大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 有機Donor:Acceptor混合薄膜中における自発的励起子解離現象2021

    • Author(s)
      上田雄飛、中野谷一、九州先端科学技術研究所、細貝拓也、田中有弥、石井久夫、濵田北斗、山頭周平、安達千波矢
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 時間分解光電子顕微鏡を用いた4CzIPN単一膜のTADF過程における光励起電子ダイナミクスの直接計測2021

    • Author(s)
      深見優介、岩澤柾人、細貝 拓也、中野谷一、福本恵紀、山田洋一
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Ir(ppy)3薄膜の発光寿命におよぼすガス曝露の影響2021

    • Author(s)
      中西大耀、岩澤柾人、山田洋一、中山泰生、細貝拓也
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 時間分解発光スペクトルの高速計測装置の開発2021

    • Author(s)
      古郡美紀、永宗靖、中山泰生、細貝拓也
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 和周波分光イメージングによるDPh-BTBT薄膜トランジスタの電界挙動2020

    • Author(s)
      片桐 千帆, 宮前 孝行, Hao Li, Fangyang Yang, Steven Baldelli
    • Organizer
      2020年応用物理学会秋季講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 有機薄膜トランジスタにおけるSAM絶縁膜の表面構造が素子特性に与える影響2020

    • Author(s)
      片桐 千帆, 赤池 幸紀, 宮前 孝行
    • Organizer
      第69回高分子討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 水によって結晶化するIr(ppy)3薄膜の結晶化条件の探索2020

    • Author(s)
      中西大耀、鶴田諒平、本田暁紀、井藤浩志、中山泰生、細貝拓也
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 真空その場発光測定によるIr(ppy)3薄膜の結晶化観察2020

    • Author(s)
      中西大耀、本田暁紀、赤池幸紀、鶴田諒平、岩澤柾人、山田洋一、井藤浩志、中野谷一、中山泰生、細貝拓也
    • Organizer
      有機EL討論会(2020年)第31回例会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 熱活性化遅延蛍光材料のスピン反転メカニズム2020

    • Author(s)
      細貝拓也
    • Organizer
      M&BE研究会「ここまで進んだ有機分子・バイオエレクトロニクス研究」
    • Related Report
      2020 Annual Research Report
  • [Presentation] 駆動中有機EL内部のキャリア挙動解析:高効率青色発光素子に対する電界誘起2重共鳴SFG分光の適用2019

    • Author(s)
      宮前孝行、大畑浩、筒井哲夫
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] オペランド時間分解電界誘起2重共鳴SFGによる青色発光有機EL素子駆動時の電荷挙動2019

    • Author(s)
      佐藤友哉、大畑浩、筒井哲夫
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] Direct Probing Carrier Behavior in Highly-Efficient OLEDs by Electric-Field-Induced Doubly-Resonant SFG Spectroscopy2018

    • Author(s)
      Takayuki MIYAMAE
    • Organizer
      8th Sum Frequency Generation symposium
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Probing Carrier Behavior in Highly-Efficient Fluorescent Blue OLEDs by Electric-Field-Induced Sum-Frequency Generation2018

    • Author(s)
      T. Miyamae, T. Sato, H. Ohata, T. Tsutsui
    • Organizer
      12th International Conference of Electroluminescence and Optoelectronic Devices (ICEL2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 電界誘起SFG分光による高効率青色発光有機EL素子の解析(1)―電荷挙動解析と素子駆動機構―2018

    • Author(s)
      佐藤友哉、宮前孝行、大畑浩、 筒井哲夫
    • Organizer
      有機EL討論会第27回例会
    • Related Report
      2018 Research-status Report

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

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