• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2013 Fiscal Year Final Research Report

Study of photo-induced electron transport phenomena on oxide semiconductor surfaces

Research Project

  • PDF
Project/Area Number 23560020
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Thin film/Surface and interfacial physical properties
Research InstitutionThe University of Tokyo

Principal Investigator

MATSUDA Iwao  東京大学, 物性研究所, 准教授 (00343103)

Co-Investigator(Kenkyū-buntansha) YAMAMOTO Susumu  東京大学, 物性研究所, 助教 (50554705)
Co-Investigator(Renkei-kenkyūsha) YOSHINOBU Jun  東京大学, 物性研究所, 教授 (50202403)
D'ANGELO M.  Institut des Nanosciences de Paris, Universite Pierre et Marie Curie-Paris 6, Professor
Project Period (FY) 2011 – 2013
Keywords酸化物半導体 / 光電子分光 / キャリアダイナミクス / 光起電力 / 光触媒
Research Abstract

We studied electronic structure and carrier dynamics of oxide semiconductor surfaces that are significant in applied chemistry of photocatalysis and in physics of strongly correlated electronic system. Experiments were carried out with high-resolution angle-resolved photoemission spectroscopy and newly developed time-resolved photoemission spectroscopy at SPring-8 BL07LSU.Surfaces of SrTiO3 and ZnO crystals are metalized with quite strong electron correlation by adsorbing hydrogen atoms and introducing surface defects.
The carrier dynamics was studied by tracking relaxation of the surface photovoltage in real time. For the photocatalysts of TiO2 nanoparticles, chemical reactivity has been reported better on the anatase-type crystal than on the rutile-type. The photo-excited carriers were found to have 10 times longer lifetime on the anatase-type than on the rutile type, as evaluated from the experimentally determined time constants from the two crystal surfaces.

  • Research Products

    (14 results)

All 2014 2013 2012 Other

All Journal Article (11 results) (of which Peer Reviewed: 11 results) Presentation (2 results) Remarks (1 results)

  • [Journal Article] Electron-Hole Recombination Time at TiO_2 Single-crystal Sur faces : Influence of Sur face Band Bending2014

    • Author(s)
      K. Ozawa, M. Emori, S. Yamamoto, R. Yukawa, Sh. Yamamoto, R. Hobara, K. Fujikawa, H. Sakama, and I. Matsuda
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 5 Pages: 1953-1957

    • DOI

      10.1021/jz500770c

    • Peer Reviewed
  • [Journal Article] Observing hot car r ier distr ibution in an n-type epitaxial gr aphene on a SiC substrate2014

    • Author(s)
      T. Someya, H. Fukidome, Y. Ishida, R. Yoshida, T. Iimori, R. Yukawa, K. Akikubo, S. Yamamoto, S. Yamamoto, T. Yamamoto, T. Kanai, K. Funakubo, M. Suemitsu, J. Itatani, F. Komori, S. Shin, and I. Matsuda
    • Journal Title

      Appl. Phys. Lett.

      Volume: 104 Pages: 161103-1,-4

    • DOI

      10.1063/1.4871381

    • Peer Reviewed
  • [Journal Article] Non-linear kinetic model for oscillator y relaxation of the photovoltage effect on a Si(111)7x7 surface2014

    • Author(s)
      M. Ogawa, R.-Y. Liu, C.-H. Lin, S. Yamamoto, R.Yukawa, R. Hobara, S.-J. Tang, and I. Matsuda
    • Journal Title

      Surf. Sci.

      Volume: 624 Pages: 70–75

    • DOI

      10.1016/j.susc.2014.01.014

    • Peer Reviewed
  • [Journal Article] Time-resolved photoemission spectroscopy with synchrotron radiation : Past, Present, and Future2013

    • Author(s)
      S. Yamamoto and I. Matsuda
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 82 Pages: 021003-1, 021003-18

    • DOI

      10.7566/JPSJ.82.021003

    • Peer Reviewed
  • [Journal Article] Relaxations of the surface photovoltage effect on the atomically controlled semiconductor sur faces studied by time-resolved photoemission spectroscopy2013

    • Author(s)
      M. Ogawa, S. Yamamoto, K. Fujikawa, R. Hobara, R. Yukawa, Sh. Yamamoto, S. Kitagawa, D. Pierucci, M.G. Silly, C.-H. Lin, R.-Y. Liu, H. Daimon, F. Sirotti, S.-J. Tang, and I. Matsuda
    • Journal Title

      Phys. Rev. B

      Volume: 88 Pages: 165313-1,-9

    • DOI

      10.1103/PhysRevB.88.165313

    • Peer Reviewed
  • [Journal Article] Oscillatory r elaxation of surface photovoltage on a silicon sur face2013

    • Author(s)
      M. Ogawa, S. Yamamoto, R. Yukawa, R. Hobara, C.-H. Lin, R.-Y. Liu, S.-J. Tang, and I. Matsuda
    • Journal Title

      Phys. Rev. B

      Volume: 87 Pages: 235308-1, 235308-4

    • DOI

      10.1103/PhysRevB.87.235308

    • Peer Reviewed
  • [Journal Article] Electronic str uctur e of the hydrogen-adsor bed Sr TiO_3(001) surface studied by polar ization-dependent photoemission spectr oscopy2013

    • Author(s)
      R. Yukawa, S. Yamamoto, K. Ozawa, M. D'Angelo, M. Ogawa, M.G. Silly, F. Sirotti, and I. Matsuda
    • Journal Title

      Phys. Rev. B

      Volume: 87 Pages: 115314-1, 115314-6

    • DOI

      10.1103/PhysRevB.87.115314

    • Peer Reviewed
  • [Journal Article] Hydrogen-induced sur face metallization of Sr TiO3(001)2012

    • Author(s)
      M. D'Angelo, R. Yukawa, K. Ozawa, S. Yamamoto, T. Hirahara, S. Hasegawa, M.G. Silly, F. Sirotti, and I. Matsuda
    • Journal Title

      Phys. Rev. Lett.

      Volume: 108 Pages: 116802-1, 116802-5

    • DOI

      10.1103/PhysRevLett.108.116802

    • Peer Reviewed
  • [Journal Article] Development of soft X-ray time-resolved photoemission spectroscopy system with a two-dimensional angle-resolved time-of-flight analyzer at SPr ing-8 BL07LSU2012

    • Author(s)
      M. Ogawa, S. Yamamoto, Y. Kousa, F. Nakamura, R. Yukawa, A. Fukushima, A. Harasawa, H. Kondo, Y. Tanaka, A. Kakizaki, and I. Matsuda
    • Journal Title

      Rev. Sci. Instrum.

      Volume: 83 Pages: 023109-1, 023109-7

    • DOI

      10.1063/1.3687428

    • Peer Reviewed
  • [Journal Article] Elucidation of Rh-induced in-gap states of Rh : Sr TiO3 visible-light-dr iven photocatalyst by soft x-r ay spectroscopy and fir st-pr inciples calculations2012

    • Author(s)
      S. Kawasaki, K. Akagi, K. Nakatsuji, S. Yamamoto, I. Matsuda, Y. Harada, J. Yoshinobu, F. Komori, R. Takahashi, M. Lippmaa, C. Sakai, H. Niwa, M. Oshima, K. Iwashina, A. Kudo
    • Journal Title

      J. Phys. Chem. C

      Volume: 116 Pages: 24445-24448

    • DOI

      10.1021/jp3082529

    • Peer Reviewed
  • [Journal Article] Controlling the topology of Fer mi sur faces in metal nanofilms2012

    • Author(s)
      M. Ogawa, A. Gray, P. M. Sheverdyaeva, P. Moras, H. Hong, L. C. Huang, S. Jung Tang, K. Kobayashi, C. Carbone, T.-C. Chiang, and I. Matsuda
    • Journal Title

      Phys. Rev. Lett.

      Volume: 109 Pages: 026802-1, 026802-4

    • DOI

      10.1103/PhysRevLett.109.026802

    • Peer Reviewed
  • [Presentation] Oscillatory Relaxation of Photovoltage on a Si Surface2013

    • Author(s)
      Iwao Matsuda
    • Organizer
      International Symposium on Surface and Nano Science 2013
    • Place of Presentation
      蔵王
    • Year and Date
      20130115-18
  • [Presentation] Tracing relaxation of the laser-induced surface photo-voltage effect by time-resolved soft X-ray photoemission spectroscopy at SPring-8 BL07LSU2012

    • Author(s)
      Iwao Matsuda
    • Organizer
      5th Asian workshop on Generation and Application of Coherent XUV and X-ray Radiation (5th AWCXR), ISSP International Workshop on Coherent Soft X-ray Sciences
    • Year and Date
      20120627-29
  • [Remarks]

    • URL

      http://imatsuda.issp.u-tokyo.ac.jp/

URL: 

Published: 2015-07-16  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi