Growth and field emission property of ZnO nanograsses

被引：10
作者：
Dong, H. M. [1 ]
Yang, Y. H. [1 ]
Yang, G. W. [1 ]
机构：
[1] Sun Yat Sen Univ, Sch Phys & Engn,Nanotechnol Res Ctr, Inst Optoelect & Funct Composite Mat, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
来源：
MATERIALS LETTERS | 2014年 / 115卷
基金：
中国国家自然科学基金;
关键词：
Nanocrystalline materials; Triangle-shaped; Field emission; Crystal growth; NANONEEDLE ARRAYS; NANOSTRUCTURES; NANOWIRES; PHOTOLUMINESCENCE;
D O I：
10.1016/j.matlet.2013.10.046
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Well-aligned ZnO nanograsses are fabricated on silicon substrate using thermal chemical vapor transport and condensation (CVTC). The field emission property of ZnO nanograsses array is characterized. The low turn-on electronic field and the high current density are achieved with ZnO nanograsses array as the emitters. It is suggested that the special morphology of ZnO nanograsses play a crucial role for its excellent field emission property, and well aligned ZnO nanograsses can be a promising candidate for an emitter. The growth mechanism of ZnO nanograsses can be explained by the combination of vapor-solid (VS) and vapor-liquid-solid (VLS) processes. The higher ZnO concentration around the silicon substrate and metal catalyst seem to play crucial roles in the formation of ZnO nanograsses. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：176 / 179
页数：4
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