Improved field emission properties of CuO nanowire arrays by coating of graphene oxide layers

被引：9
|
作者：
Yu, Weiming [1 ]
Hu, Hailong [1 ]
Zhang, Dian [1 ]
Huang, Hang [1 ]
Guo, Tailiang [1 ]
机构：
[1] Fuzhou Univ, Coll Phys & Informat Engn, Fuzhou 350002, Peoples R China
来源：
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B | 2016年 / 34卷 / 02期
关键词：
FILMS; TRANSPARENT;
D O I：
10.1116/1.4938485
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Graphene oxide (GO)-coated copper oxide (CuO) nanowire arrays were prepared as field emission cathodes using a solution process, in which CuO nanowires were grown on Cu substrates by a low-temperature hydrothermal process and the covering of GO sheets was carried out using an electrostatic self-assembly method. The field emission investigations of GO/CuO cathode showed a low turn-on field of 3.7 V/mu m and a high enhancement factor (2080) compared to those of bare CuO nanowires. Furthermore, the emission current was stable without any attenuation during the testing. The GO/CuO composite nanostructures are promising field emission cathodes in field emission application. (C) 2015 American Vacuum Society.
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页数：4
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