Effect of TiO2 Nano-Film Thickness on the Photoelectrochemical Performance and Stability of CdS Nanorod Arrays

WU Liang-peng; WANG Xiao-yang; LI Juan; YANG Xu; LI Xin-jun

doi:10.3969/j.issn.2095-560X.2018.05.004

Advances in New and Renewable Energy >

2018 , Vol. 6 >Issue 5: 359 - 364

DOI: https://doi.org/10.3969/j.issn.2095-560X.2018.05.004

Orginal Article

Effect of TiO₂ Nano-Film Thickness on the Photoelectrochemical Performance and Stability of CdS Nanorod Arrays

WU Liang-peng ,
WANG Xiao-yang ,
LI Juan ,
YANG Xu ,
LI Xin-jun

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1. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China;
2. CAS Key Laboratory of Renewable Energy, Guangzhou 510640, China;
3. Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China

Received date: 2018-03-10

Revised date: 2018-09-28

Online published: 2018-10-31

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Abstract

CdS nanorod arrays (CdSNRA) were grown on fluorine-doped tin oxide glass substrates via a hydrothermal process, and TiO₂ layers with different thicknesses were coated on CdS nanorods surface via dip-coating under mild conditions. The morphology and structure of CdSNRA@TiO₂ were characterized by field-emission scanning electron microscopy, X-ray diffraction, Raman spectroscopy and ultraviolet-visible spectroscopy. Effect of TiO₂ nano-film thickness on the photoelectrochemical performance and stability of CdSNRA@TiO₂was studied, results showed that the best performance was obtained with thickness of 50 nm. The improved photoactivity was ascribed to the efficient separation of photogenerated electrons and holes between CdS cores and TiO₂ shells.

Key words： CdS nanorod arrays; TiO₂; photoelectrochemical properties; photostability

Cite this article

WU Liang-peng , WANG Xiao-yang , LI Juan , YANG Xu , LI Xin-jun . Effect of TiO₂ Nano-Film Thickness on the Photoelectrochemical Performance and Stability of CdS Nanorod Arrays[J]. Advances in New and Renewable Energy, 2018 , 6(5) : 359 -364 . DOI: 10.3969/j.issn.2095-560X.2018.05.004

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