LiZnVO_4添加量对Zn_2SnO_4系湿敏材料性能的改善  

Improvement of Zn_2SnO_4 System Humidity Sensitive Material by Addition of LiZnVO_4

作　　者：胡素梅[1] 傅刚[2] 陈海波[1] 孟凡明[3] 

机构地区：[1]茂名学院技术物理系,广东茂名525000 [2]广州大学固体物理与材料研究实验室,广东广州510405 [3]安徽大学物理与材料科学学院电子材料研究室,安徽合肥230039

出　　处：《电子元件与材料》2006年第7期30-32,共3页Electronic Components And Materials

基　　金：广东省科技计划资助项目(2002A1070304)

摘　　要：采用共沉淀法制备了Zn2SnO4-LiZnVO4系纳米粉体,考察了液相掺杂LiZnVO4对材料微结构、湿敏性能的影响,分析了材料的复阻抗特性和频率特性。结果表明,适当的LiZnVO4添加量可明显改善Zn2SnO4-LiZnVO4系纳米材料的微结构和感湿特性。采用共沉淀法制备纳米粉体并使LiZnVO4液相掺杂为10%(摩尔分数),可使Zn2SnO4材料具有低湿电阻小、灵敏度适中的湿敏特性,频率特性表明该材料具有较好的频率响应。Zn2SnO4-LiZnVO4 system nanometer powders were prepared by co-precipitation. The influence of the amount of liquid-doped LiZnVO4 on the microstructure and humidity-sensitive characteristics of Zn2SnO4 was studied. The composite impendence and the characteristics of frequencies were analyzed. The experimental results show that humidity sensitive and microstructure characteristics of nanometer material can be improved by controlling the amount of liquid-doped LiZnVO4. A humidity sensitive material with lower resistance at lower humidity and with proper humidity sensitivity can be made by liquid-doped x（LiZnVO4）= 10% in co-precipitation Zn2SnO4 powders. The characteristics of frequencies show that the material has better respond to frequencies.

关 键 词：电子技术 微结构 湿敏性能 复阻抗特性 频率特性 

分 类 号：TN304[电子电信—物理电子学]