Structural and optical properties of polar and non-polar ZnO films grown by MOVPE

被引：15
|
作者：
Zhu, J. J. [1 ]
Aaltonen, T. [1 ]
Venkatachalapathy, V. [1 ]
Galeckas, A. [1 ]
Kuznetsov, A. Yu. [1 ]
机构：
[1] Univ Oslo, Dept Phys, Ctr Mat Sci & Nanotechnol, N-0316 Oslo, Norway
来源：
JOURNAL OF CRYSTAL GROWTH | 2008年 / 310卷 / 23期
关键词：
Crystal structure; Organometallic vapor-phase epitaxy; ZnO films;
D O I：
10.1016/j.jcrysgro.2008.07.117
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Polar and non-polar ZnO films were synthesized on different planecuts (a-, c- and R-planes) of Al(2)O(3) substrates by metal-organic vapor-phase epitaxy. Polar ZnO films were obtained on c- and a-Al(2)O(3) substrates whereas non-polar ZnO films were obtained on R-Al(2)O(3) substrates. In spite of generally better crystalline quality and optical properties of polar ZnO films, there are two characteristic photoluminescence peaks detected in the non-polar material only. The peaks (at 3.048 and 2.966 eV) are tentatively assigned to electron transitions involving zinc vacancy and oxygen interstitial defect states, respectively. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：5020 / 5024
页数：5
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