摘要
采用共沉淀法制备出SnO2-L iZnVO4系纳米湿敏粉体,考察了液相掺杂L iZnVO4对材料湿敏特性的影响,并从氧化物表面的吸附理论出发,给出了反映湿敏特性的微观参数n值,湿敏线性越好的材料其微观参数n值与0.5越靠近。实验结果表明:适当的L iZnVO4液相掺杂可使材料具有低湿电阻小、灵敏度适中的特性。理论计算得到的阻湿特性参数与实验结果符合得很好。
SnO2-LiZnVO4 series nanometer powers are prepared by co-precipitation. The influence against the humidity sensitive properties of the liquid-doped LiZnVO4 is studied. Based on the theory of surface adsorption, the microcosmic parameter n which represent humidity sensitive properties is obtained. The humidity sensitive parameter n of the material with better humidity sensitive properties should be near to 0. 5. The experimental results show that humidity-sensitive material with lower resistance at lower humidity and with proper humidity sensitivity can be made by appropriate liquid-doped LiZnVO4. The parameter of resistance-humidity properties derived from theoretical calculation can well agree with the experimental resuhs.
出处
《传感器与微系统》
CSCD
北大核心
2006年第5期19-20,24,共3页
Transducer and Microsystem Technologies
基金
广东省科技计划资助项目(2002A1070304)
关键词
湿敏特性
吸附理论
湿敏机理
humidity sensitive properties
theory of adsorption
humidity sensitive mechanism
