Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.2818096
Title: Enhanced field emission from CuO nanowire arrays by in situ laser irradiation
Authors: Zhu, Y.W. 
Sow, C.H. 
Thong, J.T.L. 
Issue Date: 2007
Source: Zhu, Y.W., Sow, C.H., Thong, J.T.L. (2007). Enhanced field emission from CuO nanowire arrays by in situ laser irradiation. Journal of Applied Physics 102 (11) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.2818096
Abstract: Laser irradiation was found to effectively enhance the field emission current of CuO nanowire arrays. The effects of laser intensity, wavelength, emission current, and working vacuum on the enhancement have been investigated in detail. The observed laser induced enhancement in field emission current is attributed to the interplay of two factors, namely, laser induced electron transition to excited states and surface oxygen desorption. Among these factors, the contribution from extra excited electrons, which increases the number of electrons in conduction band of CuO for subsequent tunneling, is dominant. A physical process of the laser induced enhancement is discussed. This work helps to elucidate the mechanisms of electron field emission from narrow band gap nanowires and will be useful for designing future vacuum nanodevices, such as photodetectors or switches, based on field emission of nanowires. © 2007 American Institute of Physics.
Source Title: Journal of Applied Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/50914
ISSN: 00218979
DOI: 10.1063/1.2818096
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