摘要
以SnCl2.2H2O和无水乙醇为原料制备SnO2透明溶胶,通过浸渍法在云母基片上制备了SnO2纳米薄膜。利用XRD和AFM手段研究了薄膜的结构和形貌,结果表明,SnO2纳米薄膜的球形粒径约为15nm;随着薄膜沉积层数的增加或工作温度的升高,薄膜电阻逐渐减小。气敏特性研究表明,薄膜对H2有较好的敏感性。
Transparent SnO2 sols were obtained by a sol-gel method from SnCl2· 2H2O in absolute ethanol, and SnO2 thin film were prepared by dip-coating technique. The microstructure of thin films was studied by XRD, AFM. The average size of the spherical SnO2 particles obtained is 15nm. The sheet resistance of the multi-ply SnO2 decreased with the increased of the film thickness and the operating temperature. The further study on its gas sensitivity demonstrated that it had a good sensitivity to H2.
出处
《化工新型材料》
CAS
CSCD
北大核心
2008年第1期15-16,30,共3页
New Chemical Materials
基金
国家"863"计划项目(2004AA302032)
