EQUILIBRIUM AND NONEQUILIBRIUM CONDUCTANCE RESPONSE OF SINTERED SNO2 SAMPLES TO CO

被引：11

作者：

LANTTO, V

RANTALA, TS

机构：

[1] Microelectronics Laboratory, University of Oulu

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1991年 / 5卷 / 1-4期

关键词：

D O I：

10.1016/0925-4005(91)80228-C

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Conductance responses of some sintered samples of SnO2 prepared in the form of thick films have been studied in the CO concentration range from one ppm upwards in dry synthetic air and also in ambients containing different amounts of humidity. The experiments have been carried out both at equilibrium conditions, by allowing the samples to stabilize at different constant temperatures, and at non-equilibrium conditions, by continuously cycling the sensors between two temperatures. The effects of different electrode materials and of some additives like antimony in SnO2 on the conductance response to CO under equilibrium and non-equilibrium conditions have been studied. In this paper the emphasis is to describe some measurements concerning a peculiar effect of electrode materials (between Au and Pt) and Sb doping on the conductance response to CO in the temperature-pulsed mode of sensor operation. A drastic difference in the non-equilibrium conductance response to CO in ambients containing humidity is found between Sb-doped SnO2 sensors with Au and Pt as electrode materials.

引用

页码：103 / 107

页数：5

共 7 条

[1]

CLIFFORD PK, 1981, THESIS CARNEGIEMELLO

[2]

Eicker H, 1977, US patent, Patent No. 4012692

[3] CATALYTIC-OXIDATION OF CARBON-MONOXIDE ON TIN(IV) OXIDE [J].