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Elucidation of mechanism of memory effect in photoswitching and development of new device

Research Project

Project/Area Number 21750184
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Functional materials/Devices
Research InstitutionHokkaido University

Principal Investigator

IIMORI Toshifumi  北海道大学, 電子科学研究所, 助教 (60360947)

Project Period (FY) 2009 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords有機導体 / 光誘起相転移 / 有機分子エレクトロニクス / 超伝導 / 非線形伝導 / 有機導電体 / 光スイッチング / 有機デバイス / 外部電場効果
Research Abstract

Organic conductors, which are organic crystals having high electrical conductivity, show conductivity switching to highly conductive state in the presence of laser light and pulsed electric fields. The highly conductive state can persist after the cease of photoirradiation because of memory effect, of which the mechanism is studied through the experiments in a variety of conditions. Moreover, time-resolved measurement technique of property change induced by photoexcitation is applied to organic superconductor, and characteristic behaviors in photoresponse are observed.

Report

(3 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • Research Products

    (22 results)

All 2010 2009

All Journal Article (8 results) (of which Peer Reviewed: 8 results) Presentation (12 results) Book (2 results)

  • [Journal Article] Photoinduced switching of electrical conductivity and its memory effect in the organic conductor α-(BEDT-TTF)_2I_3: Dependence on voltage height and temporal width of pulsed voltages2010

    • Author(s)
      T. Iimori, T. Naito, N. Ohta
    • Journal Title

      Physica B: Condensed Matter

      Volume: 405

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Time-resolved measurement of the photoinduced change in the electrical conductivity of the organic superconductor κ-(BEDT-TTF)_2Cu[N(CN)_2]Br2010

    • Author(s)
      T. Iimori, T. Naito, N. Ohta
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 114 Pages: 9070-9075

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Photoinduced switching of electrical conductivity and its memory effect in the organic conductor alpha-(BEDT=TTF)2I3 : Dependence on voltage height and temporal width of pulsed voltages2010

    • Author(s)
      Iimori, T.; Naito, T.; Ohta, N.
    • Journal Title

      Physica B : Condensed Matter

      Volume: 405

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Photoresponse of electrical conductivity in an organic superconductor investigated by time-resolved resistance measurements2010

    • Author(s)
      Iimori, T.; Naito, T.; Ohta, N.
    • Journal Title

      Physica B : Condensed Matter

      Volume: 405

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Time-resolved measurement of the photoinduced change in the electrical conductivity of the organic superconductor kappa-(BEDT-TTF)2Cu[N(CN)2]Br2010

    • Author(s)
      Iimori, T.; Naito, T.; Ohta, N.
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 114 Pages: 9070-9075

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Comparative study of electroabsorption spectra of polar and nonpolar organic molecules in solution and in a polymer film2009

    • Author(s)
      J.Tayama, T.Iimori, N.Ohta
    • Journal Title

      J.Chem.Phys. 131

      Pages: 244509-244509

    • NAID

      120001804920

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synergy Effects of Electric and Magnetic Fields on Locally Excited-State Fluorescence of Photoinduced Electron Transfer Systems in a Polymer Film2009

    • Author(s)
      K.Awasthi, T.Iimori, N.Ohta
    • Journal Title

      J.Phys.Chem.A 113

      Pages: 10603-10609

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electric field effects on state energy and molecular orientation of 2-hydroxyquinoline in solid polymer films2009

    • Author(s)
      M.S.Mehata, K.Awasthi, T.Iimori, N.Ohta
    • Journal Title

      J.Photochem.Photobio.A : Chem. 204

      Pages: 39-45

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] 有機超伝導体BEDT-TTF塩における光誘起電気伝導度変化の時間分解測定2010

    • Author(s)
      飯森俊文、他
    • Organizer
      第4回分子科学討論会
    • Place of Presentation
      大阪大学、大阪
    • Year and Date
      2010-09-16
    • Related Report
      2010 Final Research Report
  • [Presentation] 有機超伝導体BEDT-TTF塩における光誘起電気伝導度変化の時間分解測定2010

    • Author(s)
      飯森俊文・Sabeth Farzana・中畑喬之・内藤俊雄・太田信廣
    • Organizer
      第4回分子科学討論会
    • Place of Presentation
      大阪大学(豊中市)
    • Year and Date
      2010-09-16
    • Related Report
      2010 Annual Research Report
  • [Presentation] Time-resolved measurement of the photoresponse in the organic superconductor κ-(BEDT-TTF)_2Cu[N(CN)_2]Br2010

    • Author(s)
      T. Iimori, et al.
    • Organizer
      Annual Meeting on Photochemistry 2010
    • Place of Presentation
      Chiba University, Chiba, Japan
    • Year and Date
      2010-09-09
    • Related Report
      2010 Final Research Report
  • [Presentation] Time-resolved measurement of the photoresponse in the organic superconductor kappa-(BEDT-TTF)2Cu[N(CN)2]Br2010

    • Author(s)
      T.Iimori, F.Sabeth, T.Nakahata, T.Naito, N.Ohta
    • Organizer
      光化学討論会2010
    • Place of Presentation
      千葉大学(千葉市)
    • Year and Date
      2010-09-09
    • Related Report
      2010 Annual Research Report
  • [Presentation] Photoirradiation effects on electrical conductivity in organic conductor and superconductor2010

    • Author(s)
      飯森俊文, 太田信廣
    • Organizer
      International symposium of joint research network on advanced materials and devices
    • Place of Presentation
      苫小牧市、ホテルニドム
    • Year and Date
      2010-03-25
    • Related Report
      2009 Annual Research Report
  • [Presentation] Control of electrical conductivity in an organic conductor and an organic superconductor using photoirradiation and external fields2009

    • Author(s)
      T. Iimori, et al.
    • Organizer
      The 6th Korea-Japan Symposium on Frontier Photoscience
    • Place of Presentation
      Korea
    • Year and Date
      2009-10-31
    • Related Report
      2010 Final Research Report
  • [Presentation] Control of electrical conductivity in an organic conductor and an organic superconductor using photoirradiation and external fields2009

    • Author(s)
      飯森俊文, 太田信廣
    • Organizer
      The 6th Korea-Japan Symposium on Frontier Photoscience
    • Place of Presentation
      Chungnam, Korea
    • Year and Date
      2009-10-31
    • Related Report
      2009 Annual Research Report
  • [Presentation] 有機超伝導体β-(BEDT-TTF)_2I_3における電気伝導度の光応答2009

    • Author(s)
      飯森俊文・Farzana Sabeth・中畑喬之・内藤俊雄・太田信廣
    • Organizer
      第3回分子科学討論会
    • Place of Presentation
      名古屋市、名古屋大学
    • Year and Date
      2009-09-23
    • Related Report
      2009 Annual Research Report
  • [Presentation] 有機超伝導体の金属-超伝導相転移温度近傍における光応答2009

    • Author(s)
      飯森俊文・内藤俊雄・太田信廣
    • Organizer
      光化学討論会2009
    • Place of Presentation
      前橋市
    • Year and Date
      2009-09-18
    • Related Report
      2009 Annual Research Report
  • [Presentation] A Novel Optoelectronic Function in an Organic Conductor : Memory Effect of Photoswitching Behavior Controlled by Pulsed Electric Fields and Photoirradiation2009

    • Author(s)
      飯森俊文, 内藤俊雄, 太田信廣
    • Organizer
      8th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets
    • Place of Presentation
      ニセコ、ホテルヒルトン
    • Year and Date
      2009-09-16
    • Related Report
      2009 Annual Research Report
  • [Presentation] A novel optoelectronic function in an organic conductor: memory effect of photoswitching behavior controlled by pulsed electric fields and Photoirradiation2009

    • Author(s)
      T. Iimori, et al.
    • Organizer
      8th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets
    • Place of Presentation
      Hilton Niseko Village, Hokkaido, Japan
    • Year and Date
      2009-09-13
    • Related Report
      2010 Final Research Report
  • [Presentation] Nonthermal Photoresponse in an Organic Superconductor Investigated by Time-resolved Measurement of Electrical Conductivity2009

    • Author(s)
      飯森俊文, 内藤俊雄, 太田信廣
    • Organizer
      8th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets
    • Place of Presentation
      ニセコ、ホテルヒルトン
    • Year and Date
      2009-09-13
    • Related Report
      2009 Annual Research Report
  • [Book] Molecular Electronic and Related Materials -Control and Probe with Light2010

    • Author(s)
      T. Iimori, T. Naito, N. Ohta
    • Publisher
      Transworld Research Network
    • Related Report
      2010 Final Research Report
  • [Book] Molecular Electronic and Related Materials-Control and Probe with Light2010

    • Author(s)
      T.Iimori, T.Naito, N.Ohta
    • Publisher
      Transworld Research Network
    • Related Report
      2009 Annual Research Report

URL: 

Published: 2009-04-01   Modified: 2016-04-21  

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