Ultraviolet-illumination-enhanced photoluminescence effect in zinc oxide thin films

被引：41
|
作者：
Jin, CM
Tiwari, A
Narayan, RJ [1 ]
机构：
[1] N Carolina State Univ, Joint Dept Biomed Engn, Raleigh, NC 27695 USA
[2] N Carolina State Univ, Raleigh, NC 27695 USA
[3] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA
来源：
JOURNAL OF APPLIED PHYSICS | 2005年 / 98卷 / 08期
关键词：
D O I：
10.1063/1.2108156
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report an enhancement effect of ultraviolet illumination on the photoluminescence intensities of zinc oxide thin films. Large-grain < 0001 >-textured zinc oxide thin films were deposited on amorphous-fused silica substrates using pulsed laser deposition. We found that the intensities of excitonic emission and green-band emission increased with ultraviolet light exposure time until a maximum value was achieved. We attribute this ultraviolet radiation enhancement effect to oxygen desorption on the surface of the zinc oxide thin film. We have proposed a phenomenological model to explain this interesting photoluminescence behavior. (c) 2005 American Institute of Physics.
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页数：7
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