Humidity sensitive properties of nanostructured Al-doped ZnO:TiO2 thin films

被引:45
作者
Tai, WP [1 ]
Kim, JG
Oh, JH
机构
[1] Inha Univ, Inst Adv Mat, Inchon 402751, South Korea
[2] Inha Univ, Sch Mat Sci & Engn, Inchon 402751, South Korea
基金
新加坡国家研究基金会;
关键词
humidity sensor; nanostructure; bilayered film;
D O I
10.1016/S0925-4005(03)00602-6
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Nanostructured Al-doped ZnO(AZ):TiO2 films are prepared using a sol-gel process and the humidity sensitive properties of the films are investigated. The films possess nanostructure. Nanostructured-bilayered TiO2/AZ film exhibits improved linearity with narrow hysteresis loop in the resistance variation for relative humidity than single layered film. The resistance of the bilayered TiO2/AZ film changes by nearly three orders of magnitude during the relative humidity variation of 30-90%. The humidity sensitive properties in the nanostructured AZ:TiO2 films are discussed. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:477 / 481
页数:5
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