SnO_2-LiZnVO_4系湿敏材料湿敏特性及介电特性  

Humidity sensitive and dielectric properties of SnO_2-LiZnVO_4 system humidity sensitive

作　　者：胡素梅[1] 陈海波[1] 傅刚[2] 

机构地区：[1]茂名学院技术物理系,广东茂名525300 [2]广州大学物理系,广东广州510405

出　　处：《电子元件与材料》2007年第4期37-39,共3页Electronic Components And Materials

基　　金：广东省科技计划资助项目(2002A1070304)

摘　　要：采用尿素共沉淀法制备SnO2纳米粉体,考察了液相掺杂LiZnVO4对其湿敏性能的影响,测试了材料的电抗特性、电容量特性和响应–恢复特性。结果表明,采用尿素共沉淀法制备SnO2纳米粉体,液相掺杂x(LiZnVO4)为10%时,可使材料具有较好的湿敏性能和响应–恢复特性,响应时间和恢复时间都为55s左右。测试频率对材料的电抗和电容量影响很大。SnO2 system nanometer powders were prepared by co-precipitation with urea. The influence of the amount of liquid-doped LiZnVO4 on the humidity-sensitive characteristics of SnO2 was studied. The properties of reactance, capacitance and response-recovery properties were tested. The experimental results show that the properties of humidity sensor is better if SnO2 system nanometer powders were prepared by co-precipitation with urea and l0 % （mole fraction） liquid-doped LiZnVO4, The characteristics of reactance and capacitance are influenced by measure frequency.

关 键 词：电子技术 湿敏性能 电抗特性 电容量特性 

分 类 号：TN304[电子电信—物理电子学]