Photoluminescence of zinc oxide crystals synthesized on zinc wire by electric current heating method

被引：12
|
作者：
Yamasaki, H [1 ]
Minato, K [1 ]
Nezaki, D [1 ]
Okamoto, T [1 ]
Kawamoto, A [1 ]
Takata, M [1 ]
机构：
[1] Nagaoka Univ Technol, Dept Elect Engn, Nagaoka, Niigata 9402188, Japan
来源：
SOLID STATE IONICS | 2004年 / 172卷 / 1-4期
关键词：
zinc oxide; electric current heating method; crystal growth; whisker; UV emission;
D O I：
10.1016/j.ssi.2004.02.050
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
When a Zn wire was heated by electric current, ZnO whiskers grew on the wire surface. The average diameters of the whiskers grown under O-2, 20% O-2 and Ar atmospheres were 0.12, 0.17 and 0.4 mum, respectively. The well-known visible emission was observed from the whiskers grown under O-2 and 20% O-2 atmospheres. The whiskers grown under Ar atmosphere showed strong ultraviolet (UV) emission. X-ray diffraction measurements revealed that the crystalline quality of the whiskers increased with decreasing O-2 concentration in the growth atmosphere. It was found that residual O-2 Of less than 10 ppm in Ar atmosphere is used for the synthesis of the whiskers with UV emission. Monitoring O-2 concentration during the electric current heating of Zn wire in Ar atmosphere was effective in estimating the yields of the whiskers. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：349 / 352
页数：4
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