Ethanol sensor based on ZnO and Au-doped ZnO nanowires

被引：195

作者：

Hongsith, N. ^{[1
]}

Viriyaworasakul, C. ^{[1
]}

Mangkomtong, P. ^{[1
]}

Mangkorntong, N. ^{[1
]}

Choopun, S. ^{[1
]}

机构：

[1] Chiang Mai Univ, Dept Phys, Fac Sci, Chiang Mai 50200, Thailand

来源：

CERAMICS INTERNATIONAL | 2008年 / 34卷 / 04期

关键词：

powder : solid state reaction; electrical properties; ZnO; sensors;

D O I：

10.1016/j.ceramint.2007.09.099

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

ZnO nanowires and Au-doped ZnO nanowires were prepared by oxidation reaction. The oxidation was performed by heating zinc powder and a mixture of zinc and 1 wt% gold powder which was pressed into a tube shape at 600 degrees C for 24 h. The ethanol sensors based on ZnO nanowires were simply fabricated by applying silver electrode at each end of the tube and inserting a coil heater into the tube. The ethanol sensing properties of ZnO nanowires were observed from the resistance change under ethanol vapor atmosphere. By considering the sensitivity and response time, the optimum operating temperature of the ethanol sensor was found to be 240 degrees C. Also, it was found that the sensitivity of the sensor based on Audoped ZnO nanowires exhibits higher value than that of the sensor based on undoped ZnO nanowires. (C) 2007 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：823 / 826

页数：4

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