Influence of the carrier gas on the luminescence of ZnO tetrapod nanowires

被引：41
作者：
Leung, CY
Djurisic, AB
Leung, YH
Ding, L
Yang, CL
Ge, WK
机构：
[1] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
[2] Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China
来源：
JOURNAL OF CRYSTAL GROWTH | 2006年 / 290卷 / 01期
关键词：
nanostructures; photoluminescence; ZnO;
D O I：
10.1016/j.jcrysgro.2005.12.110
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
ZnO tetrapod nanowires were prepared by thermal evaporation of Zn in the flow of different carrier gases (argon, nitrogen, humidified argon and humidified nitrogen). The optical properties of the tetrapod nanowires were investigated by low-temperature photoluminescence measurements, reflectance measurements and X-ray photoelectron spectroscopy (XPS). It was found that the type of gas significantly affects the optical properties of the fabricated tetrapod nanowires. The origin of the differences in the photoluminescence spectra of tetrapod nanowires fabricated with different carrier gases is discussed. The addition of water vapor to the carrier gas affected the photoluminescence and XPS spectra for both N-2 and Ar carrier gases, and the changes observed in the XPS spectra indicated possible incorporation of hydrogen in these samples. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：131 / 136
页数：6
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