摘要
采用共沉淀法制备出SnO2-K2O-LiZnVO4系湿敏粉体,考察了液相掺杂K+对材料湿敏特性的影响,并用直流特性法对材料的导电机理进行了分析。实验结果表明,适当的K+液相掺杂可使材料具有低湿电阻小,灵敏度适中的特性。直流特性法分析表明,材料属电子-离子混合导电机制,且离子电导成分越多材料的湿敏特性越好。
SnO2-K2O-LiZnVO4 system nanometer powers were prepared by co -precipitation. The influence of the liquid - doped K ^＋ on the humidity - sensitive characteristics was studied. The conductance mechanism of the material is analyzed by direct current. The experimental results show that a humidity - sensitive material with lower resistance at lower humidity and with proper humidity sensitivity can be made by appropriate liquid - doped K^＋. The analysis of the characteristics of direct current shows that the material conductance is electronics - ion and the properties of the material are better with more composition of ion conductance.
出处
《功能材料与器件学报》
CAS
CSCD
北大核心
2006年第4期357-360,共4页
Journal of Functional Materials and Devices
基金
广东省科技计划项目(2002A1070304)
关键词
湿敏性能
导电机理
直流特性法
humidity - sensitive characteristics
conductance mechanism
properties of direct current
