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题名: The effects of substrate temperature on the structure and properties of ZnO films prepared by pulsed laser deposition
作者: Zhu, BL;  Sun, XH;  Zha, XZ;  Su, FH;  Li, GH;  Wu, XG;  Wu, J;  Wu, R;  Liu, J
发表日期: 2008
摘要: ZnO thin films were prepared by pulsed laser deposition (PLD) on glass substrates with growth temperature from room temperature (RT) to 500 degrees C. The effects of substrate temperature on the structural and optical properties of ZnO films have been investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission spectra, and RT photoluminescence (PL) measurements. The results showed that crystalline and (0 0 2)-oriented ZnO films were obtained at all substrate temperatures. As the substrate temperature increased from RT to 500 degrees C, the ratio of grain size in height direction to that in the lateral direction gradually decreased. The same grain size in two directions was obtained at 200 degrees C, and the size was smallest in all samples, which may result in maximum E, and E-0 of the films. UV emission was observed only in the films grown at 200 degrees C, which is probably because the stoichiometry of ZnO films was improved at a suitable substrate temperature. It was suggested that the UV emission might be related to the stoichiometry in the ZnO film rather than the grain size of the thin film. (c) 2007 Elsevier Ltd. All rights reserved.
KOS主题词: Programmable logic devices;  GRAIN;  grain growth;  Optical properties
刊名: VACUUM
专题: 中国科学院半导体研究所(2009年前)_期刊论文

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推荐引用方式:
Zhu, BL ; Sun, XH ; Zha, XZ ; Su, FH ; Li, GH ; Wu, XG ; Wu, J ; Wu, R ; Liu, J .The effects of substrate temperature on the structure and properties of ZnO films prepared by pulsed laser deposition ,VACUUM,2008 ,82(5): 495-500
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