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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/48128

Title: Microstructure-dependent visible-light driven photoactivity of sputtering assisted synthesis of sulfide-based visible-light sensitizer onto ZnO nanorods
Authors: Chein-Chung Wang
Yuan-Chang Liang
Cheng-Chia Chung
Ya-Ju Lo
Contributors: 國立臺灣海洋大學:光電與材料科技學系
Keywords: sputtering
microstructures
heterostructure
photoactivity
Date: 2016-12
Issue Date: 2018-08-13T08:22:31Z
Publisher: Materials
Abstract: Abstract: The ZnO-CdS core-shell composite nanorods with CdS shell layer thicknesses of 5 and 20 nm were synthesized by combining the hydrothermal growth of ZnO nanorods with the sputtering thin-film deposition of CdS crystallites. The microstructures and optical properties of the ZnO-CdS nanorods were associated with the CdS shell layer thickness. A thicker CdS shell layer resulted in a rougher surface morphology, more crystal defects, and a broader optical absorbance edge in the ZnO-CdS rods. The ZnO-CdS (20 nm) nanorods thus engaged in more photoactivity in this study. When they were further subjected to a postannealing procedure in ambient Ar/H2, this resulted in the layer-like CdS shell layers being converted into the serrated CdS shell layers. By contrast, the ZnO-CdS nanorods conducted with the postannealing procedure exhibited superior photoactivity and photoelectrochemical performance; the substantial changes in the microstructures and optical properties of the composite nanorods following postannealing in this study might account for the observed results.
Relation: 9(12)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/48128
Appears in Collections:[光電科學研究所] 期刊論文

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