期刊
APPLIED SURFACE SCIENCE
卷 257, 期 24, 页码 10317-10321出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2011.05.132
关键词
ZnO; Electrochemical deposition; Morphology evolution; Growth mechanism; Photoluminescence
This very paper focuses on the synthesis of ZnO nano-structures by means of electro-chemical-deposition process. The crystalline structure and morphologies of the prepared ZnO were characterized with X-ray diffraction and scanning electronic microscopy, respectively. It is found that in case of low Zn(NO3)(2)center dot 6H(2)O electrolyte concentration the fast growth mode in the c-axis direction leaded to the formation of 1D nanostructure of ZnO. On the other hand, at high concentration, this fast growth mode was restricted because the absorbed NO3- on (0 0 0 1) plane would bond with Zn2+ ions, which, therefore, resulted in the formation of 2D nanostructure of ZnO. Room temperature photoluminescence performances of different ZnO structures were also investigated. A blue shift of 15 nm for ZnO nano-sheets has been found as the shapes of ZnO evolved from nano-rods to nano-sheets. (C) 2011 Elsevier B.V. All rights reserved.
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