无机材料学报2000，Vol.15Issue(5)：824-826,3.
SnO2气敏元件烧结工艺与电性能关系的复阻抗分析
Impedance Analysis for the Relationship of Calcining Process and Sensing Properties of SnO2 Gas Sensors
傅刚 1陈志雄 2张进修2
作者信息
- 1. 中山大学物理系, 广州 510275 广州师范学院物理系, 广州 510405
- 2. 广州师范学院物理系, 广州 510405
- 折叠
摘要
Abstract
The SnO2 thick film gas sensors were prepared by using a standard screen printing technology and calcined at different temperature and time. By measuring the sensitivity and long-term stability and using complex impedance analysis, the effects of calcining temperature and time on sensing properties and microstructure of the thick films were researched. Gas sensors with high sensitivity and long-term stability can be prepared by choicing suitable calcining process parameters. Complex impedance analysis indicates that the depressed angles of semicircular arc will reduce to zero with the extension of calcining time. The reducing of depressed angles means the distribution of relaxation time at the grain boundary becomes more uniform. This result shows that the distribution of defects and pores, and the grain connected shapes at the grain boundary tend to be more uniform and stable with the extension of calcining time.关键词
SnO2气敏元件/厚膜/烧结温度/保温时间/复阻抗分析Key words
SnO2 gas sensor/thick film/calcining temperature/calcining time/complex impedancedocument分类
信息技术与安全科学引用本文复制引用
傅刚,陈志雄,张进修..SnO2气敏元件烧结工艺与电性能关系的复阻抗分析[J].无机材料学报,2000,15(5):824-826,3.
