CARBON-MONOXIDE SENSORS BASED ON THIN-FILMS OF BASNO3

被引：74

作者：

LAMPE, U

GERBLINGER, J

MEIXNER, H

机构：

[1] Siemens AG, Corporate Research and Development, D-81730 Munich

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1995年 / 25卷 / 1-3期

关键词：

BARIUM STANNATE; CARBON MONOXIDE SENSORS; THIN-FILM SENSORS;

D O I：

10.1016/0925-4005(95)85145-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

BaSnO3 is a very promising sensor material for detecting carbon monoxide. The mechanism of CO sensitivity of this metal oxide is supposed to be a surface reaction process. Thus to get a high gas sensitivity, the CO elementary sensor is realized as a thin film, The sensitivities of the BaSnO3 thin films to CO are measured as a function of the temperature and the oxygen concentration. As the most important cross-sensitivities, the influence of humidity, methane and hydrogen on the sensor signal has been examined. The CO sensitivity shows a maximum in the range 600-700 degrees C under dry conditions. Humidity has a different influence on the CO sensitivity,: which depends on the oxygen concentration. The cross-sensitivity to methane can be described by the sum of the sensitivities to CO and methane.

引用

页码：657 / 660

页数：4

共 6 条

[1]

GERBLINGER J, 1994, SENSOR ACTUAT B-CHEM, V18, P529

[2] CHEMISORPTION AND CHARGE-TRANSFER AT IONIC SEMICONDUCTOR SURFACES - IMPLICATIONS IN DESIGNING GAS SENSORS [J].