摘要
研究了γ—Ｆｅ２Ｏ３、ＺｎＯ、ＷＯ３、Ｌａ１－ｘＳｒｘＦｅＯ３气敏元件的环境温度特性。环境温度改变时（－４０～４０℃）元件的阻值Ｒ０的变化依基体材料及检测气体而异，Ｌａ１－ｘＳｒｘＦｅＯ３乙醇元件最为稳定，ＺｎＯ和ＷＯ３的Ｈ２Ｓ元件的Ｒ０有明显漂移，但在一定浓度Ｈ２Ｓ中的Ｒｇ比较稳定。这几种元件均适于在ＶＨ＝５Ｖ下工作。
The environment temperature properties of based on γ-Fe2O3、 ZnO、WO3 and La1-xSrxFeO3 gas sensors were studied. As the environment temperature changed from -40℃to 40℃, the changes △R of the resistance of sensors depended on bulk materials and detected gases. Based on La1-xSrxFeO3 sensor to C2H5OH was the most stable. The R0 of based on ZnO and WO3 sensors for H2S obviously drifted, hot the Rg of sensors were more stable in the constant concentration H2S gas. These kinds of sensors were all suited to work at VH=5 V.
出处
《传感器技术》
CSCD
1996年第3期15-19,共5页
Journal of Transducer Technology
关键词
气敏元件
环境温度
灵敏度
Gas sensors Environment temperature Sensitivity
