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2010 Fiscal Year Annual Research Report

分子性固体における電荷輸送とその動的現象の解明

Research Project

Project/Area Number 20685014
Research InstitutionChiba University

Principal Investigator

解良 聡  千葉大学, 大学院・融合科学研究科, 准教授 (10334202)

Keywords表面界面物性 / 有機半導体 / 電子分光 / 超薄膜 / 電子構造 / 有機単結晶 / 分子間相互作用 / 電荷移動度
Research Abstract

本研究では極めて詳細な電子分光実験を通して、有機半導体薄膜の電子構造の観点から、その背景に広がる独特な電子物性を理解すべく研究を進めてきた。弱い相互作用で結ばれた分子性固体中の電荷の動きを如何にして捉えるか、電子論として如何に物理的に記述できるかが命題である。光電子分光法という古来の手法を高精度測定を通じて斬新に活用することにより、キャリア伝導機構の重要な因子である再配向エネルギーとトランスファー積分の両者に直接的に踏み込むことができる。今年度の主な成果として、(1)シャトルコック型極性分子の吸着構造と分子内電荷分布の変化の定量的決定、(2)有機半導体ヘテロ界面におけるエネルギー準位接合機構の解明、(3)単分子層薄膜における双極子相互作用と誘電率の評価があげられる。特に(3)については、極性分子系である各種フタロシアニン薄膜の単分子配向薄膜を作製し、構築される表面静電ポテンシャルの定量的解析を行った。単分子膜形成過程に双極子斥力と分子間力が相互に影響し、高被覆率下における膜構造を支配することがわかった。また単分子膜の誘電率・分極率・分子双極子の値を定量決定し、連続体(ヘルムホルツ)マクロモデルとナノ原子(トッピング)モデルの相関を議論することに成功した。

  • Research Products

    (34 results)

All 2011 2010 Other

All Journal Article (13 results) (of which Peer Reviewed: 10 results) Presentation (20 results) Remarks (1 results)

  • [Journal Article] Photoemission from valence bands of transition metal phthalocyenines2011

    • Author(s)
      Ming-Hui Shang, 他
    • Journal Title

      Journal of Electron Spectroscopy and Related Phenomena

      Volume: (印刷中)

    • Peer Reviewed
  • [Journal Article] Impact of structural imperfection on the energy level alignment in organic films2011

    • Author(s)
      T.Hosokai, 他
    • Journal Title

      Physical Review B

      Volume: (印刷中)

    • Peer Reviewed
  • [Journal Article] Orientational ordering of non-planar phthalocyanines on Cu (111) : Strength and orientation of the electric dipole moment2011

    • Author(s)
      A.Gerlach, 他
    • Journal Title

      Physical Review Letters

      Volume: 106 Pages: 156102(1-4)

    • Peer Reviewed
  • [Journal Article] Impact of alkyl side chains at self-assembly, electronic structure and charge arrangement in sexithiophene thin films2011

    • Author(s)
      S.Duhm, 他
    • Journal Title

      Organic Electronics

      Volume: 12 Pages: 903-910

    • Peer Reviewed
  • [Journal Article] Dielectric properties of polar-phthalocyanine monolayer systems with repulsive dipole interaction2011

    • Author(s)
      H.Fukagawa, 他
    • Journal Title

      Physical Review B

      Volume: 83 Pages: 085304(1-8)

    • Peer Reviewed
  • [Journal Article] Mechanism of the Fermi Level Pinning at Organic Donor-Acceptor Heterojunction Interfaces2011

    • Author(s)
      Hong Ying Mao, 他
    • Journal Title

      Organic Electronics

      Volume: 12 Pages: 534-540

    • Peer Reviewed
  • [Journal Article] Observation and Analysis of Small Inclination of Thymine Molecules on Graphite2011

    • Author(s)
      A.Habib, 他
    • Journal Title

      Journal of Physical Chemistry C

      Volume: 115 Pages: 511-515

    • Peer Reviewed
  • [Journal Article] One dimensional molecular dipole chain arrays on graphite via nanoscale phase separation2011

    • Author(s)
      Y.L.Huang, 他
    • Journal Title

      Chemical Communication

      Volume: 46 Pages: 9040-9042

    • Peer Reviewed
  • [Journal Article] Light Effective Mass in the Widely-Dispersed Valence Band of Single Crystalline Rubrene Observed by High-Resolution Angle-Resolved Ultraviolet Photoelectron Spectroscopy2010

    • Author(s)
      Y.Nakayama, 他
    • Journal Title

      Proceedings of 2009 MRS Fall Meeting

      Volume: 1197 Pages: D07-31(1-6)

    • Peer Reviewed
  • [Journal Article] Highest-Occupied-Molecular-Orbital Band Dispersion of Rubrene Single Crystals as Observed by Angle-Resolved Ultraviolet Photoelectron Spectros copy2010

    • Author(s)
      S.Machida, 他
    • Journal Title

      Physical Review Letters

      Volume: 104 Pages: 156401(1-4)

    • Peer Reviewed
  • [Journal Article] Effects of Local Electrostatic Potential of Polar Molecule on Electronic Structure : ClGa-phthalocyanine2010

    • Author(s)
      H.Machida, 他
    • Journal Title

      UVSOR Activity Report 2009

      Volume: 37 Pages: 81

  • [Journal Article] Interface Electronic Structure of Co-phthalocyanine/Cu (111)2010

    • Author(s)
      R.Tateishi, 他
    • Journal Title

      UVSOR Activity Report 2009

      Volume: 37 Pages: 78

  • [Journal Article] Electronic Structure and Molecular Orientation of Picene Film2010

    • Author(s)
      D.Ikeda, 他
    • Journal Title

      UVSOR Activity Report 2009

      Volume: 37 Pages: 77

  • [Presentation] Band gap states of copper phthalocyanine thin films induced by nitrogen exposure2011

    • Author(s)
      T.Sueyoshi, et al.
    • Organizer
      DPG spring meeting 2011
    • Place of Presentation
      Dresden, Germany
    • Year and Date
      2011-03-18
  • [Presentation] Impact of spontaneous structural imperfection on the energy level alignment2011

    • Author(s)
      T.Hosokai, et al.
    • Organizer
      DPG spring meeting 2011
    • Place of Presentation
      Dresden, Germany
    • Year and Date
      2011-03-18
  • [Presentation] Interface electronic structure and molecular arrangement of N-heteroacene thin films on HOPG substrate2011

    • Author(s)
      Q.Xin, et al.
    • Organizer
      The 6^<th> International Conference on Molecular Electronics and Bioelectronics (M&BE6)
    • Place of Presentation
      Sendai, Japan
    • Year and Date
      2011-03-16
  • [Presentation] Impact of alkyl side chains at self-assembly, electronic structure and charge arrangement in sexithiophene thin films2011

    • Author(s)
      S.Duhm, et al.
    • Organizer
      The 6^<th> International Conference on Molecular Electronics and Bioelectronics (M&BE6)
    • Place of Presentation
      Sendai, Japan
    • Year and Date
      2011-03-16
  • [Presentation] Growth of dipolar ClAlPc molecules on surfaces2011

    • Author(s)
      YL.Huang, et al.
    • Organizer
      The 6^<th> International Conference on Molecular Electronics and Bioelectronics (M&BE6)
    • Place of Presentation
      Sendai, Japan
    • Year and Date
      2011-03-16
  • [Presentation] Ultraviolet Photoelectron Spectroscopy for Molecular Superstructures2011

    • Author(s)
      S.Kera
    • Organizer
      G-COE International Workshop on Organic Interfaces and Related Phenomena
    • Place of Presentation
      Chiba, Japan
    • Year and Date
      2011-01-28
  • [Presentation] Experimental evidence for a widely-dispersed HOMO-band of the single-crystalline rubrene studied by angle-resolved photoemission2010

    • Author(s)
      Y.Nakayama, et al.
    • Organizer
      International Symposium on Organic Transistors and Functional Interfaces 2010 (OFET2010)
    • Place of Presentation
      Les Diablerets, Switzerland
    • Year and Date
      20100500
  • [Presentation] Photoelectron spectroscopy for Electronic Properties of Organic Semiconductor Solids2010

    • Author(s)
      S.Kera
    • Organizer
      COE Start-up International Workshop "Organic Semiconductors Towards the Next"
    • Place of Presentation
      Chiba, Japan
    • Year and Date
      2010-11-11
  • [Presentation] Electronic Properties of Organic Semiconductor Single Crystal2010

    • Author(s)
      S.Kera, et al.
    • Organizer
      Asian conference on organic electronics (A-COE) and Asian Symposium on Organic Materials for Electronics and Photonics (ASOMEP)
    • Place of Presentation
      Seoul, Korea
    • Year and Date
      2010-11-03
  • [Presentation] Energy level alignment at the organic donor-acceptor heterojunction interfaces2010

    • Author(s)
      W.Chen, et al.
    • Organizer
      The 10th Japan-China Joint Symposium on Conduction and Photoconduction in Organic Solids and Related Phenomena
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2010-10-17
  • [Presentation] First-principles measurements of electrical conductivity in organic semiconductors by UPS : Direct measurements of charge delocalization, electron-phonon coupling and band-gap states2010

    • Author(s)
      N.Ueno, S.Kera
    • Organizer
      The 10th Japan-China Joint Symposium on Conduction and Photoconduction in Organic Solids and Related Phenomena
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2010-10-17
  • [Presentation] Interface electronic structure of Co-phthalocyanine/Cu (111)2010

    • Author(s)
      S.Kera, et al.
    • Organizer
      18^<th> international vacuum congress (IVC-18) held jointly with ICN+T 2010, ICSS-14, and VASSCAA-5
    • Place of Presentation
      Beijing, China
    • Year and Date
      2010-08-23
  • [Presentation] Energy-band dispersion of rubrene single crystal : ARUPS study2010

    • Author(s)
      S.Kera, et al.
    • Organizer
      18^<th> international vacuum congress (IVC-18) held jointly with ICN+T 2010, ICSS-14, and VASSCAA-5
    • Place of Presentation
      Beijing, China
    • Year and Date
      2010-08-23
  • [Presentation] Molecular orientation and energy-level alignment of a N-heterocyclic conjugated compound2010

    • Author(s)
      Q.Xin, et al.
    • Organizer
      18^<th> international vacuum congress (IVC-18) held jointly with ICN+T 2010, ICSS-14, and VASSCAA-5
    • Place of Presentation
      Beijing, China
    • Year and Date
      2010-08-23
  • [Presentation] Photoelectron spectra of thin film and single crystalline phase of rubrene2010

    • Author(s)
      S.Kera, et al.
    • Organizer
      37th International Conference on Vacuum Ultraviolet and X-ray Physics
    • Place of Presentation
      Vancouver, Canada
    • Year and Date
      2010-07-11
  • [Presentation] Photoemission from valence bands of transition metal phthalocyanines2010

    • Author(s)
      Ming-Hui Shang, et al.
    • Organizer
      37th International Conference on Vacuum Ultraviolet and X-ray Physics
    • Place of Presentation
      Vancouver, Canada
    • Year and Date
      2010-07-11
  • [Presentation] Widely Dispersed HOMO-Band of Single Crystalline Rubrene Observed by Angle-Resolved Photoemission2010

    • Author(s)
      Y.Nakayama, et al.
    • Organizer
      International Conference on Science and Technology of Synthetic Metals 2010 (ICSM 2010)
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2010-06-04
  • [Presentation] Organic heterostructures : Engineering the electronic structure by controlling the molecular orientation2010

    • Author(s)
      S.Duhm, et al.
    • Organizer
      International Conference on Science and Technology of Synthetic Metals 2010 (ICSM 2010)
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2010-06-04
  • [Presentation] Intramolecular Polar Bonds Control the energy Levels of Organic Thin Films2010

    • Author(s)
      S.Duhm, et al.
    • Organizer
      International Symposium of Functional pai-Electron Systems (FP9)
    • Place of Presentation
      Georgia, USA
    • Year and Date
      2010-05-23
  • [Presentation] Energy-Level Study of a Designed N-Heterocyclic Organic Semiconductor2010

    • Author(s)
      Q.Xin, et al.
    • Organizer
      International Symposium of Functional pai-Electron Systems (FP9)
    • Place of Presentation
      Georgia, USA
    • Year and Date
      2010-05-23
  • [Remarks]

    • URL

      http://ulab-www.tf.chiba-u.jp/

URL: 

Published: 2012-07-19  

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