Field emission from crystalline copper sulphide nanowire arrays

被引:186
作者
Chen, J
Deng, SZ
Xu, NS
Wang, SH
Wen, XG
Yang, SH
Yang, CL
Wang, JN
Ge, WK
机构
[1] Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China
[2] Zhongshan Univ, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
[3] Zhongshan Univ, Guangdong Prov Key Lab Displat Mat & Technol, Guangzhou 510275, Peoples R China
[4] Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China
关键词
D O I
10.1063/1.1478149
中图分类号
O59 [应用物理学];
学科分类号
摘要
Straight crystalline copper sulphide (Cu2S) nanowire arrays have been grown by using a simple gas-solid reaction at room temperature. These were demonstrated to exhibit semiconductor properties. Field emission was observed at a field of similar to6 MV/m, and its current-field characteristics deviate from Fowler-Nordheim theory, i.e., showing a nonlinear Fowler-Nordheim plot. The uniform emission from the whole arrays was observed using transparent anode technique, and their variation with applied field was recorded. The emission from individual nanowires was also studied using a field emission microscope, and was found to consist of a number of spatially resolved diffuse spots. Finally, stable emission current at different levels and over time was recorded. These findings indicate that semiconductor nanowires as cold cathode have a potential future, worthy of further comprehensive investigation. The technical importance of using semiconductor nanowires as cold cathode emitter is given. (C) 2002 American Institute of Physics.
引用
收藏
页码:3620 / 3622
页数:3
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