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

页码：349 / 352

页数：4

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