Urchin-like ZnO nanostructures: Synthesis, characterization and optical properties

Urchin-like ZnO nanostructures: Synthesis, characterization and optical properties
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海胆状 ZnO 纳米结构:合成、表征和光学性质

DOI:
10.1016/j.matlet.2009.02.059
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发表时间:
2009-06
期刊:
影响因子:
3
通讯作者:
Chen, Qiong
Chen, Qiong
中科院分区:
材料科学3区
文献类型:
--
作者:
Chen, Yiqing;Zhu, Yunqing;Shao, Yan;Zhang, Xinhua;Chen, Qiong

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采用两步热蒸发法合成了海胆状ZnO纳米结构。用扫描电镜、X射线粉末衍射、透射电镜和荧光光谱对产物进行了表征。表征结果表明,海胆状ZnO纳米结构由球形金属Zn核和生长在Zn核表面的纤锌矿ZnO纳米线组成,纤锌矿ZnO纳米线的生长方向为沿着。< 10-10>根据对实验结果的分析,提出了海胆状ZnO纳米结构形成的两步生长机制。并对荧光发射机理进行了讨论。
Urchin-like ZnO nanostructures have been synthesized by a two-step thermal evaporation method. The product was characterized with scanning electron microscopy, X-ray powder diffraction, transmission electron microscopy, and spectrofluorometry. The results of characterization revealed that the urchin-like ZnO nanostructure consists of a spherical metallic Zn core and wurtzite ZnO nanowires growing on the surface of the ZnO buffer which covers the Zn core and the growth directions of wurtzite ZnO nanowires are along< 10-10>. According to the analysis on these results, a possible two-step growth mechanism was proposed to explain the formation of the urchin-like ZnO nanostructures. The fluorescence-emission mechanisms were also discussed.
DOI: 10.1109/16.46378
发表时间: 1990-02
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