THICK-FILM HUMIDITY SENSORS BASED ON (BA, SR)TIO3 POROUS CERAMIC DOPED WITH MGO AND CAO

被引：24

作者：

SLUNECKO, J

HOLC, J

HROVAT, M

CEH, M

机构：

[1] Jožef Stefan Institute, University of Ljubljana, 61000 Ljubljana

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1992年 / 7卷 / 1-3期

关键词：

D O I：

10.1016/0925-4005(92)80339-Y

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Undoped and CaO or MgO doped Ba0.5Sr0.5TiO3 materials for humidity sensors were investigated. Sensing elements were prepared in bulk in thick film form. The response of bulk samples, when measured at 400 Hz, was four orders of magnitude for doped and three orders of magnitude for undoped material. The dependence of conductance versus relative humidity for thick film sensors is around one order of magnitude less because of decrease in sensitivity under 40% relative humidity. This is attributed to the deficiency of pores with diameter under 30 nm which is presumably the result of the interaction between the sensing material and the glass phase in Pt electrodes.

引用

页码：439 / 442

页数：4

共 12 条

[1] HUMIDITY-SENSITIVITY CHARACTERISTICS OF CATIO3 POROUS CERAMICS [J].