Synthesis, characterization and optical properties of star-like ZnO nanostructures

被引:36
|
作者
Peng, Zhiwei [1 ]
Dai, Guozhang [1 ]
Chen, Peng [1 ]
Zhang, Qinglin [1 ]
Wan, Qiang [1 ]
Zou, Bingsuo [1 ]
机构
[1] Hunan Univ, State Key Lab CBSC, Micronano Technol Res Ctr, Key Lab Micronano Optoelect Devices,MOE, Changsha 410082, Hunan, Peoples R China
基金
中国国家自然科学基金;
关键词
ZnO; Thermal evaporation; Nanomaterials; Luminescence; ZINC-OXIDE NANOSTRUCTURES; MAGNETIC-PROPERTIES; NANORODS; GROWTH; PHOTOLUMINESCENCE; LUMINESCENCE; ARRAYS;
D O I
10.1016/j.matlet.2010.01.029
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Star-like ZnO nanostructures were synthesized in bulk quantity by thermal evaporation method. The morphologies and structure of ZnO nanostructures were investigated by field emission scanning electron microscopy (FESEM). X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results demonstrated that the as-synthesized products consisted of star-like ZnO nanostructure with hexagonal wurtzite phase. The legs of the star-like nanostructures were preferentially grown up along the [0001] direction. A vapor-solid (VS) growth mechanism was proposed to explain the formation of the star-like structures. Photoluminescence spectrum exhibited a narrow ultraviolet emission at around 380 nm and a broad green emission around 491 nm. Raman spectrum of the ZnO nanostructures was also discussed. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:898 / 900
页数:3
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