Effect of Li+ doping on ZrO2-TiO2 humidity sensor

被引：92
|
作者：
Jain, MK [1 ]
Bhatnagar, MC [1 ]
Sharma, GL [1 ]
机构：
[1] Indian Inst Technol, Dept Phys, Thin Film Lab, New Delhi 110016, India
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 1999年 / 55卷 / 2-3期
关键词：
humidity sensor; zirconium titanate; salt doping;
D O I：
10.1016/S0925-4005(99)00047-7
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Humidity sensors are widely used in domestic and industrial environments. The authors have investigated 0.5ZrO(2)-0.5TiO(2) ceramic for its humidity sensing electrical properties at room temperature. The bulk humidity sensors were prepared by the conventional ceramic method. Salt doping with Li+ ions is found to increase the sensitivity by an order of two, and also improves the linearity. X-ray and scanning electron microscopy (SEM) investigations have established that ZrTiO4 phase grows at a sintering temperature of 1200 degrees C. The abnormal behaviour in humidity sensing characteristics for samples sintered at 1150 degrees C may be due to micropores in between the grains. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：180 / 185
页数：6
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