摘要
采用丝网印刷技术制备了以La0.9Sr0.1Ga0.8Mg0.2O3-δ(LSGM,Sr、Mg双掺杂的LaGaO3)为固体电解质、NiO为敏感电极(SE)材料的电流型NO2传感器。用X射线衍射仪和扫描电镜对该传感器进行了理化分析;通过测量其在不同温度和不同NO2浓度气氛中的I-V曲线和时间响应曲线,研究了传感器的电流输出信号和NO2浓度的关系、时间响应特性以及稳定性。结果显示:在400℃～650℃测试温度范围内,传感器响应电流的变化幅值ΔI和NO2浓度之间存在较好的线性关系。传感器的稳定性测试结果表明:传感器样品的响应电流幅值出现了一定程度的下降,稳定性有待进一步提高。
Amperometric NO2 Sensor Based on La0.9 Sr0.1 Ga0.8 ng0.2 O3-~ （ LSGM, Sr, Mg doped LaGaO3 ） with NiO sensing electrode was prepared by screen-printing technique. The physical characteristics of the sensor were studied by the X-ray diffraction and scanning electron microscope. The sensitivity and stability of the sensor was studied by measuring the I-V curves and response/recovery time characteristics under different NO2 concentrations and temperatures of current. The results show that, at the range of 400 ~C -650 ~C ,there is a good linear relationship between the variation of the current change AI and NO2 concentration of the sensor. The stability-testing results show that the response current amplitude of the sensor decreased to some extent as time goes by ,and the stability of the sensor needs to be further improved.
出处
《传感技术学报》
CAS
CSCD
北大核心
2012年第12期1631-1635,共5页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金项目(60971047)
中国博士后科学基金会项目(20100470735,2010-2012)
浙江省自然科学基金项目(Y1090035)
