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ZnO cages with tunable shell thickness and photoluminescence properties

✍ Scribed by Jie Zhou; Dapeng Wu; Huajie Guo; Ning Liu; Ying Xiao; Kai Jiang

Book ID
103844634
Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
812 KB
Volume
172
Category
Article
ISSN
0921-5107

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✦ Synopsis

Uniform ZnO cages were fabricated via using colloidal carbon spheres as sacrificing template. ZnO precursor could be easily coated on the carbon spheres by soaking the template into Zn(CH 3 COO) 2 aqueous solution. After calcination, the average diameter of the cages was 200 nm which experienced a large shrinkage from the initial carbon template (600 nm). The shell thickness of the cages could be manipulated from 20 nm to 40 nm by adjusting the concentration of Zn(CH 3 COO) 2. The correlation between the shell thickness and photoluminescence (PL) performances of these cages was also investigated. Moreover, this facile method could be potentially adopted as a general way to fabricate hollow structures of other metal oxides.

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## Abstract We have reported the preparation of ZnO‐coated GaN nanowires and investigated changes in the structural and photoluminescence (PL) properties by the application of a thermal annealing process. For fabricating the core‐shell nanowires, Zn target was used to sputter ZnO shell onto GaN cor