Efficient piezoelectric ZnO nanogenerators based on Au-coated silica sphere array electrode

被引：0
|
作者：
Ko Y.H. [1 ]
Nagaraju G. [1 ]
Yu J.S. [1 ]
机构：
[1] Department of Electronics and Radio Engineering, Institute for Laser Engineering, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin-si
来源：
Yu, J. S. (jsyu@khu.ac.kr) | 1600年 / Springer Science and Business Media, LLC卷 / 08期
基金：
新加坡国家研究基金会;
关键词：
Piezoelectric nanogenerators; Rough surface of top electrode; Silica spheres; Zinc oxide;
D O I：
10.1186/1556-276X-8-511
中图分类号：
学科分类号：
摘要：
We reported ZnO nanorod-based piezoelectric nanogenerators (NGs) with Au-coated silica sphere array as an efficient top electrode. This electrode can readily bend the ZnO nanorods due to its enhanced surface roughness, thus resulting in more increased and regular piezoelectric charge output. Under a low external pushing force of 0.3 kgf, the output current and voltage were increased by approximately 2.01 and 1.51 times, respectively, in comparison with a conventional Au top electrode without silica spheres. Also, the effect of Au-coated silica spheres on the bending radius of ZnO nanorods was theoretically investigated. © 2013 Ko et al.
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