Sequential synthesis and improved photoelectrochemical properties of ZnO/CdTe/CdS nanocable arrays photoanode
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- 作者：Rong Liu ; Xina Wang ; Hai Zhou ; Tian Wang ; Jieqiong Zhang ; Yang Xu ; Chao He ; Baoyuan Wang ; Jun Zhang ; Hao Wang
- 关键词：ZnO/CdTe/CdS ; Nanocable arrays ; Photoelectrochemical properties ; Photoanode
- 刊名：International Journal of Hydrogen Energy
- 出版年：13 December, 2013
- 年：2013
- 卷：38
- 期：36
- 页码：16755-16760
- 全文大小：1460 K
文摘
Vertically aligned ZnO/CdTe/CdS nanocable arrays-on-ITO substrate were prepared as photoanodes for solar cells via successive ion adsorption and reaction of CdS on ZnO/CdTe nanocable arrays pre-synthesized by electrochemical deposition of CdTe on ZnO nanowire arrays. Dense ZnO/CdTe and CdTe/CdS interfaces were formed in ZnO/CdTe/CdS nanocables through transmission electron microscope analysis. Based on the photovoltaic properties, the thickness for both CdTe and CdS shells were optimized to 鈭?0聽nm. Together with the high absorption over the visible light region and the good crystal quality as revealed, a photocurrent density of 鈭?2.4聽mA/cm2 has been obtained for the ZnO/CdTe/CdS nanocable arrays photoanode under the irradiation of AM 1.5G simulated sunlight.