Conductance analysis of (Co, Nb, Fe)-doped SnO2 thick film gas sensors

被引：13

作者：

Adolfo Ponce, Miguel

Parra, Rodrigo

Castro, Miriam S.

Aldao, Celso M.

机构：

[1] Univ Mar del Plata, Inst Mat Sci & Technol, Buenos Aires, DF, Argentina

[2] Consejo Nacl Invest Cient & Tecn, Natl Res Council, RA-1033 Buenos Aires, DF, Argentina

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2007年 / 18卷 / 12期

关键词：

D O I：

10.1007/s10854-007-9276-7

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Thick films prepared with undoped nanometric SnO2 particles and with (Co, Nb, Fe)-doped SnO2 were studied with the purpose of developing oxygen and carbon monoxide gas sensors. The ceramic powders were obtained through the Pechini method. The morphological characteristics were studied with SEM and TEM, after which, they were subjected to sensitivity tests under different atmospheres. A correlation was established between the microstructure of the material, the effects of the additives, and the electrical behavior. The response of the sensor could be explained as the result of the characteristics of the intergranular potential barriers developed at intergrains. It was determined that the SnO2-doped films have a greater sensitivity between 200 degrees C and 350 degrees C.

引用

页码：1171 / 1177

页数：7

共 16 条

[1] Effect of Fe2O3 doping on the electrical properties of a SnO2 based varistor [J].