Growth of a-b-axis orientation ZnO films with zinc vacancies by SSCVD

被引:12
作者
Dai, L. P. [1 ]
Deng, H. [1 ]
Chen, G. [1 ]
Tang, C. F. [1 ]
Wei, M. [1 ]
Li, Y. [1 ]
机构
[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Sch Microelect & Solid State Elect, Chengdu 610054, Peoples R China
关键词
ZnO thin films; a-b-axis orientation; SSCVD; zinc vacancies; PL;
D O I
10.1016/j.vacuum.2006.11.005
中图分类号
T [工业技术];
学科分类号
08 [工学];
摘要
Zinc oxide (ZnO) films were grown on silicon (1 0 0) substrates by single-source chemical vapor deposition (SSCVD). X-ray diffraction (XRD) showed that ZnO thin films have a polycrystalline hexagonal wurtzite structure with (1 0 0) and (1 0 1) orientation, i.e., a-b-axis orientation. Atomic force microscopy (AFM) and scanning electronic microscopy (SEM) showed the films to be of relatively high density with a smooth surface. X-ray photoelectron spectroscopy (XPS) showed that the deposited films were very close to stoichiometry but contained a small number of zinc instead of O vacancies as normally found with ZnO films produced by other methods. These results were also confirmed by photoluminescence (PL) measurements. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:969 / 973
页数:5
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