High-quality hexagonal ZnO crystals grown by chemical vapor deposition

被引：6
|
作者：
Li, Zhenjun [1 ]
Hu, Zuofu [1 ]
Liu, Fengjuan [1 ]
Sun, Jian [1 ]
Huang, Haiqin [1 ]
Zhang, Xiqing [1 ]
Wang, Yongsheng [1 ]
机构：
[1] Beijing Jiaotong Univ, Inst Optoelect Technol, Minist Educ, Key Lab Luminescence & Opt Informat, Beijing 100044, Peoples R China
来源：
MATERIALS LETTERS | 2011年 / 65卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Zinc oxide; Chemical vapor deposition; Optical materials and properties; OPTICAL-PROPERTIES; ZINC-OXIDE; FILMS;
D O I：
10.1016/j.matlet.2010.12.027
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
High-quality zinc oxide (ZnO) crystals were grown on a (0001) sapphire substrate by chemical vapor deposition at 830 degrees C under atmospheric pressure. The hexagonal crystals had an average diameter of about 150 pm, and a thickness of about 15 mu m, as observed under a polarizing microscope. The large (0002) facet was flat, regular, and neat. In the X-ray diffraction pattern, strong (0002) and weak (0004) peaks indicate that the crystals had a wurtzite structure. The crystalline quality was characterized by Raman scattering, and the E-2(high), E-2(low), and A(1)(LO) modes confirm the high quality of the ZnO crystals. Photoluminescence (PL) spectra of the crystals had a strong and sharp ultraviolet emission peak at 379 nm. The PL mechanism was also discussed. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：809 / 811
页数：3
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