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Preparation and photoluminescence of ZnO nanorods

机译：ZnO纳米棒的制备与光致发光

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ZnO nanorods had been successfully prepared by annealing the precursors, which are produced by the chemical precipitation method. The annealing temperature is found to be a key parameter for the preparation of ZnO nanorods. The largest ratio of the length to diameter for nanorods has been obtained at the annealing temperature of 400℃. The microstructure of the resultant nanorods was studied by means of X-ray diffraction, transmission electron microscopy and photoluminescence spectra. The UV and visible emission are observed at room temperature. Spectra analyses show that the green emission depends strongly on the annealing temperature. The green and the yellow emission are attributed to the single ionized oxygen vacancy Vo~+ and the interstitial oxygen O_i~-, respectively.
机译：ZnO纳米棒是通过对前驱体进行退火而成功制备的，前驱体是通过化学沉淀法制备的。发现退火温度是制备ZnO纳米棒的关键参数。在400℃的退火温度下，纳米棒的长径比最大。通过X射线衍射，透射电子显微镜和光致发光光谱研究了所得纳米棒的微观结构。在室温下观察到紫外线和可见光发射。光谱分析表明，绿色发射强烈依赖于退火温度。绿色和黄色发射分别归因于单个离子化氧空位Vo_ +和间隙氧O_i〜-。

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