摘要
采用sol-gel法制备了尖晶石结构的ZnFe2O4粉体,以其为电极材料在钇稳氧化锆陶瓷片(YSZ)上利用丝网印刷技术制备了片式NO2传感器,并对传感器在不同NO2浓度和不同温度下的输出电动势E和响应时间进行了研究。结果显示:在φ(NO2)为(68～494)×10–6范围内,E随着NO2浓度的增大而增大,并与NO2浓度的对数呈现良好的线性关系。在600℃高温时,传感器上升和下降响应时间分别为60和120s,且重复性较好。但随着工作温度的升高,传感器的灵敏度下降。
In this study, ZnFe2O4 powders with spinel structure were prepared by the sol-gel method, and planar NO2 sensor with obtained ZnFe2O4 powders as electrode material was fabricated on yttria-stabilized zirconia （YSZ） ceramics chips by means of screen-printing. The output voltage E and response time of prepared sensors were studied under conditions of different NO2 concentrations and temperatures. The results show that, when the NO2 concentration is in the range of 68-494×10^-6, E increases with increasing NO2 concentration and is proportional to the logarithm of NO2 concentration. At 600℃, the up and down response time of sensor are 60 s and 120 s, respectively, with good repeatability. However, the sensitivity of sensor decreases with increasing working temperature.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2009年第11期16-19,共4页
Electronic Components And Materials
基金
浙江省自然科学基金资助项目(No.Y1080430)
