Thick films of copper-titanate resistive humidity sensor

被引：54

作者：

Kim, DU ^{[1
]}

Gong, MS ^{[1
]}

机构：

[1] Dankook Univ, Dept Chem, Chungnam 330714, South Korea

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2005年 / 110卷 / 02期

关键词：

ceramic humidity sensor; thick film; TiO2-Cu2O-Na2O; resistive humidity sensor;

D O I：

10.1016/j.snb.2005.02.010

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The humidity-sensitive TiO2-Cu2O-Na2O thick films were prepared by screen printing on alumina substrates and subsequent firing. Pastes for screen printing were obtained by adding an organic vehicle and binder to TiO2-CuO-Na2CO3 powders. The microstructure of the films changed with the content of the sodium oxide and the firing temperatures. When the resistance characteristics of the sensors obtained from TiO2-Cu2O-Na2O, 10-2-1 were measured, the resistance changed linearly in its semi-logarithmic graph. The resistance varied from 107 to 104 Q between 20 and 95%RH, which was required for a common humidity sensor. Temperature dependence, frequency dependence and response time were also measured and estimated. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：321 / 326

页数：6

共 14 条

[1]

ANDERSON JH, 1968, J PHYS CHEM-US, V72, P3362

[2]

FAGAN JE, 1993, AM CERAM SOC B, V27, P119

[3] EFFECT OF ALKALINE OXIDE ADDITION ON THE HUMIDITY SENSITIVITY OF NB2O5-DOPED TIO2 [J].