Citation: CHENG Hui, DONG Jiang-Zhou, CHAO Hui, YAO Jiang-Hong, CAO Ya-An. Infection of Oxygen Vacancy at the TiO₂ Surface for Film Electrode Rup₂P/TiO₂/ITO Photo-Induced Charge Transfer[J]. Acta Physico-Chimica Sinica, ;2012, 28(04): 850-856. doi: 10.3866/PKU.WHXB2012020111 shu

Infection of Oxygen Vacancy at the TiO₂ Surface for Film Electrode Rup₂P/TiO₂/ITO Photo-Induced Charge Transfer

CHENG Hui ^1,2 ,
DONG Jiang-Zhou ² ,
CHAO Hui ³ ,
YAO Jiang-Hong ^1,2, ,
CAO Ya-An ^1,2,

1.
1. College of Physics, Nankai University, Tianjin 300071, P. R. China;
2. Teda Applied Physics School, The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, Nankai University, Tianjin 300457, P. R. China;
3. School of Chemical and Chemistry Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China

Received Date: 2 November 2011
Available Online: 1 February 2012
Fund Project: 国家自然科学基金(50872056, 51072082, 21173121, 11074129)资助项目 (50872056, 51072082, 21173121, 11074129)

The surface properties of TiO₂-X (X=5, 10, 20, X=[NaOH] (in mol·L^-1)) samples prepared by modification of hydrolyzed TiCl₄ were studied. The surface-sensitized Ru(phen)₂(PIBH) (Rup₂P) (phen= phenanthroline, PIBH=pyridyl benzimidazole hybrid) film electrodes Rup₂P/TiO₂-5/ITO (indium tin oxide), Rup₂P/TiO₂-10/ITO, and Rup₂P/TiO₂-20/ITO were prepared. Among the three films, the photovoltaic properties of Rup₂P/TiO₂-10/ITO were the best and those of Rup₂P/TiO₂-5/ITO were the worst. The band structures, and properties on the surfaces of Rup₂P and the three TiO₂ samples were analyzed using absorption spectra, surface photovoltage spectra, photoluminescence spectra, and photocurrent action spectra. The photo-induced charge transfer process was studied by cyclic voltammetry under irradiation and photocurrent action spectra. The results revealed the oxygen vacancy at the TiO₂ surface was very important for the photo-induced charge transfer process of Rup₂P/TiO₂-X/ITO. The photocurrent mechanism of Rup₂P/TiO₂-X/ITO is discussed.
- Rup₂P,
- TiO₂,
- Surface-sensitization,
- Rup₂P/TiO₂-X/ITO,
- Photo-induced charge transfer
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Infection of Oxygen Vacancy at the TiO2 Surface for Film Electrode Rup2P/TiO2/ITO Photo-Induced Charge Transfer

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通讯作者: 陈斌, bchen63@163.com

Infection of Oxygen Vacancy at the TiO₂ Surface for Film Electrode Rup₂P/TiO₂/ITO Photo-Induced Charge Transfer