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

页码：809 / 811

页数：3

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