Jing-hai YANGa, b, c, 
, 
, Ming GAOa, Yong-jun ZHANGa, Li-li YANGa, b, Ji-hui LANGa, c, Dan-dan WANGb, Ya-xin WANGa, Hui-lian LIUa, b, Hou-gang FANa, Mao-bin WEIa and Fu-zhu LIUa
aThe Institute of Condensed State Physics, Jilin Normal University, Siping 136000, P. R. China
bKey Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, P. R. China
cSchool of Material Science and Engineering, Jiangsu University, Zhenjiang 210013, P. R. China
Available online 23 September 2008.
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Abstract
ZnO nanorods were synthesized using the sol-gel method, and the effects of annealing temperature and Ce doping on the morphologies and optical properties of ZnO nanostructures were investigated in detail. The XRD measurements showed that the as-synthesized ZnO nanostructures had a hexagonal wurtzite structure. SEM images showed that uniform nanorods formed at 900 °C. Photoluminescence measurements showed an ultraviolet emission peak and a relatively broad visible light emission peak for the samples sintered at different temperatures. The UV emission peak bathochromically shifted when the annealing temperature rose from 850 to 1000 °C. Ce doping decreased the synthesized temperature of the ZnO nanorods to 500 °C, and the UV peaks hypsochromically shifted.
Keywords: Annealing temperature; Ce-doped ZnO; Optical property
