Preparation and photoelectric performance of ITO/TiO2/CdS composite thin films

被引：51

作者：

Chi, Yu-Juan ^{[1
]}

Fu, Hong-gang ^{[1
]}

Qi, Le-hui ^{[2
]}

Shi, Ke-ying ^{[2
]}

Zhang, Heng-bin ^{[2
]}

Yu, Hai-tao ^{[2
]}

机构：

[1] Harbin Inst Technol, Dept Appl Chem, Harbin 150001, Peoples R China

[2] Heilongjiang Univ, Sch Chem & Mat Sci, Harbin 150080, Peoples R China

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2008年 / 195卷 / 2-3期

基金：

中国国家自然科学基金;

关键词：

electrodeposition; titanium dioxide; cadmium sulfide; photocurrent response;

D O I：

10.1016/j.jphotochem.2007.11.002

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：

ITO/TiO2/CdS composite thin films were successfully prepared by electrodeposition of US on ITO/TiO2 substrate. The prepared ITO/TiO2/CdS thin films were characterized in detail by X-ray diffraction, surface photovoltage, and scanning electronic microscopy techniques. The results indicated that the deposited US layer with about 1:1 stoichiometry of Cd and S distributes not only on the surface with cauliflower-like structure but also the TiO2 film interior and even in the immediate proximity to the surface of ITO substrate. The UV-vis absorption spectrum results suggested that the absorption peak of the ITO/TiO2/CdS film shifts from the ultraviolet region to the visible region in comparison to that of the ITO/TiO2 film. Furthermore, by the photocurrent-potential behavior and incident monochromatic photon to current conversion efficiency measurements, it can be also noted that the deposited ITO/TiO2/CdS thin films possess higher photoelectric conversion efficiency than the ITO/TiO2 films. The sensibilization of TiO2 with US can effectively improve steady photocurrent. Therefore, the modification of US for ITO/TiO2 can strongly ameliorate the photoelectric capability of ITO/TiO2 thin film, and the prepared ITO/TiO2/CdS thin films were expected to possess more excellent photoelectrochemical performance than the ITO/TiO2 films. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：357 / 363

页数：7

共 36 条

[21] VECTORIAL ELECTRON INJECTION INTO TRANSPARENT SEMICONDUCTOR MEMBRANES AND ELECTRIC-FIELD EFFECTS ON THE DYNAMICS OF LIGHT-INDUCED CHARGE SEPARATION [J].

OREGAN, B ;

MOSER, J ;

ANDERSON, M ;

GRATZEL, M .

JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (24) :8720-8726

[22] Photosensitization of nanocrystalline TiO2 by self-assembled layers of CdS quantum dots [J].

Peter, LM ;

Riley, DJ ;

Tull, EJ ;

Wijayantha, KGU .

CHEMICAL COMMUNICATIONS, 2002, (10) :1030-1031

[23] Surface photovoltage spectra and photoelectrochemical properties of semiconductor-sensitized nanostructured TiO2 electrodes [J].

Qian, XM ;

Qin, DQ ;

Song, Q ;

Bai, YB ;

Li, TJ ;

Tang, XY ;

Wang, EK ;

Dong, SJ .

THIN SOLID FILMS, 2001, 385 (1-2) :152-161

[24] Photosensitization of TiO2 nanoparticulate thin film electrodes by CdS nanoparticles [J].

Qian, XM ;

Qin, DQ ;

Bai, YB ;

Li, TJ ;

Tang, XY ;

Wang, EK ;

Dong, SJ .

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2001, 5 (7-8) :562-567

[25] Photosensitization of TiO2 by MxOy and MxSy nanoparticles for heterogeneous photocatalysis applications [J].

Robert, Didier .

CATALYSIS TODAY, 2007, 122 (1-2) :20-26

[26] Interparticle electron transfer between size-quantized CdS and TiO2 semiconductor nanoclusters [J].

Sant, PA ;

Kamat, PV .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2002, 4 (02) :198-203

[27] Electrodeposition and optical characterisation of CdS thin films on ITO-coated glass [J].

Sasikala, G ;

Dhanasekaran, R ;

Subramanian, C .

THIN SOLID FILMS, 1997, 302 (1-2) :71-76

[28] Nano-structured CdTe, CdS and TiO2 for thin film solar cell applications [J].

Singh, RS ;

Rangari, VK ;

Sanagapalli, S ;

Jayaraman, V ;

Mahendra, S ;

Singh, VP .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2004, 82 (1-2) :315-330

[29] Photo-production of hydrogen over the CdS-TiO2 nano-composite particulate films treated with TiCl4 [J].

So, WW ;

Kim, KJ ;

Moon, SJ .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2004, 29 (03) :229-234

[30] SENSITIZATION OF HIGHLY POROUS, POLYCRYSTALLINE TIO2 ELECTRODES BY QUANTUM SIZED CDS [J].

VOGEL, R ;

POHL, K ;

WELLER, H .

CHEMICAL PHYSICS LETTERS, 1990, 174 (3-4) :241-246

← 1 2 3 4 →