Photo-induced surface charge separation of highly oriented TiO2 anatase and rutile thin films

被引：99
|
作者：
Sumita, T [1 ]
Yamaki, T [1 ]
Yamamoto, S [1 ]
Miyashita, A [1 ]
机构：
[1] Japan Atom Energy Res Inst, Dept Mat Dev, Takasaki, Gumma 3701292, Japan
来源：
APPLIED SURFACE SCIENCE | 2002年 / 200卷 / 1-4期
关键词：
titanium oxide; laser ablation; photocatalysis; photoconductivity; charge separation;
D O I：
10.1016/S0169-4332(02)00614-1
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Surface charge separation behavior of photo-generated carriers in highly oriented TiO2 anatase and rutile films was investigated using a technique in which the transient surface charge is observed by laser pulse irradiation without metal contacts and an externally applied field. According to the measurements, the quantum efficiency of photo-generated holes transported toward the surface was determined as a function of incident laser energy. The photo-generated holes in anatase can be transported toward the surface for irradiation at the photon energy of its bandgap. The holes transported toward the rutile surface, however, were generated close to the surface for irradiation at the photon energy much higher than its bandgap. (C) 2002 Published by Elsevier Science B.V.
引用
收藏
页码：21 / 26
页数：6
相关论文
共 50 条
  • [31] Tailoring the crystal structure of TiO2 thin films from the anatase to rutile phase
    Kotake, Haruka
    Jia, Junjun
    Nakamura, Shin-ichi
    Okajima, Toshihiro
    Shigesato, Yuzo
    JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A, 2015, 33 (04):
  • [32] Photo-induced surface reaction of highly oriented anatase polycrystalline films synthesized using a CVD apparatus operated in atmospheric regime
    Tokita, S
    Tanaka, N
    Ohshio, S
    Saitoh, H
    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 2003, 111 (06) : 433 - 435
  • [33] Impact of Nanoparticle Consolidation on Charge Separation Efficiency in Anatase TiO2 Films
    Rettenmaier, Karin
    Berger, Thomas
    FRONTIERS IN CHEMISTRY, 2021, 9
  • [34] Effect of halides on photo-induced hydrophilicity over TiO2 films
    Dai, WX
    Wang, XX
    Fu, XZ
    Liu, P
    Lin, HX
    ACTA PHYSICO-CHIMICA SINICA, 2005, 21 (11) : 1274 - 1279
  • [35] Investigation into the photo-induced change in wettability of hydrophobized TiO2 films
    Risse, Gunter
    Matys, Sabine
    Boettcher, Horst
    APPLIED SURFACE SCIENCE, 2008, 254 (18) : 5994 - 6001
  • [36] Effect of surface fluorination on the photocatalytic and photo-induced hydrophilic properties of porous TiO2 films
    Chen, Yanmin
    Chen, Feng
    Zhang, Jinlong
    APPLIED SURFACE SCIENCE, 2009, 255 (12) : 6290 - 6296
  • [37] Photoinduced amphiphilic surface on polycrystalline anatase TiO2 thin films
    Nakajima, A
    Koizumi, S
    Watanabe, T
    Hashimoto, K
    LANGMUIR, 2000, 16 (17) : 7048 - 7050
  • [38] Rutile and anatase mixed crystal TiO2 thin films prepared by pulsed laser deposition
    Kitazawa, Sin-iti
    Choi, Yeongzoo
    Yamamoto, Shunya
    Yamaki, Tetsuya
    THIN SOLID FILMS, 2006, 515 (04) : 1901 - 1904
  • [39] Preparation and characterization of polycrystalline anatase and rutile TiO2 thin films by rf magnetron sputtering
    Miao, L
    Jin, P
    Kaneko, K
    Terai, A
    Nabatova-Gabain, N
    Tanemura, S
    APPLIED SURFACE SCIENCE, 2003, 212 : 255 - 263
  • [40] Structural and optical properties of rutile and anatase TiO2 thin films:: Effects of Co doping
    Park, YR
    Kim, KJ
    THIN SOLID FILMS, 2005, 484 (1-2) : 34 - 38
12345