Synthesis, optical and field emission properties of three different ZnO nanostructures

被引:27
作者
Zhang, Qiuxiang
Yu, Ke [1 ]
Bai, Wei
Wang, Qingyan
Xu, Feng
Zhu, Ziqiang
Dai, Ning
Sun, Yan
机构
[1] E China Normal Univ, Dept Elect Engn, Shanghai 200062, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Tech Phys, Natl Lab Infrared Phys, Shanghai 200083, Peoples R China
基金
中国国家自然科学基金;
关键词
nanomaterials; crystal growth; photoluminescence; field emission;
D O I
10.1016/j.matlet.2006.12.064
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Three different ZnO nanostructures: nanocherries, nanomultipeds and nanospindles were successfully synthesized by thermal evaporation method under different experimental conditions. The X-ray diffraction peaks indicate that these ZnO nanostructures prefer to grow along the c-axis. Photolummescence (PL) spectra show that they are partially related to morphologies. Comparing the field emission (FE) measurements of the three ZnO nanostructures, we found that the nanocherries structure has the lowest turn-on and threshold field, 2.31 V/mu m and 5.83 V/mu m, respectively, for nanospindles and nanomultipeds structures, they are 2.82 V/mu m and 6.57 V/mu m, 3.13 V/mu m and 7.35 V/mu m, revealing that the nanocherries structure may be one of the promising candidates for field emission displays. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:3890 / 3892
页数:3
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