期刊
ELECTROCHIMICA ACTA
卷 56, 期 2, 页码 919-924出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2010.10.003
关键词
CdS; Quantum dots; TiO2; Nanorod arrays; Photoelectrochemical properties
资金
- Science and Technology Development Program of Jilin Province [20100417]
CdS quantum dots (QDs) coated TiO2 nanorod arrays have been prepared via a two-step method. TiO2 nanorod arrays were synthesized by a facile hydrothermal method, and CdS QDs were deposited on the nanorods by a sequential chemical bath deposition (S-CBD) technique. The surface morphology, structure, optical and photoelectrochemical behaviors of the core-shell nanorod array films are considered. A photocurrent of 2.5 mA/cm(2), an open circuit photovoltage of 1.10V. and a conversion efficiency of 1.91% were obtained under an illumination of 100 mW/cm(2), when the CdS QDs deposited on TiO2 nanorods film for about 7 cycles. The results demonstrate that the composite films are of excellence with respect to photovoltaic conversion. (C) 2010 Elsevier Ltd. All rights reserved.
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