热处理对TiO2-V2O5纳米复合薄膜结构及性能的影响

材料热处理学报, 2007, 28(3): 14-18. doi: 10.3969/j.issn.1009-6264.2007.03.004

热处理对TiO2-V2O5纳米复合薄膜结构及性能的影响

李德增 ^1, , 吴广明 ^2, , 王爱荣 ^3, , 肖锟 ^4, , 沈军 ^5, , 周斌 ^6, , 张志华 ^7,

1.同济大学波耳固体物理研究所,上海,200092

2.同济大学波耳固体物理研究所,上海,200092

3.同济大学波耳固体物理研究所,上海,200092

4.同济大学波耳固体物理研究所,上海,200092

5.同济大学波耳固体物理研究所,上海,200092

6.同济大学波耳固体物理研究所,上海,200092

7.同济大学波耳固体物理研究所,上海,200092

基金项目: 上海市纳米科技与产业发展中心(0352nm043) 国家自然科学基金(20133040;50572073)

关键词：溶胶-凝胶法 , TiO2-V2O5纳米复合薄膜 , 热处理

Study of heat treating on structure and properties of nanocomposite TiO2-V2O5 thin films

以钛酸丁脂、V2O5粉末为前驱体,采用溶胶-凝胶技术制备了TO2-V2O5纳米复合薄膜,并通过椭偏仪、AFM、XRD、TG-DSC和UV-VIS-NIR分光光度计等方法研究热处理对复合薄膜特性的影响.结果表明:随热处理温度的升高,TiO2的结构由非晶到锐钛矿再到金红石相转变,并且金红石相出现和完全转变的温度降低约200℃;晶粒尺寸从5.1 nm逐渐增大227.3 nm;复合薄膜的折射率由1.6增大到2.4,同时薄膜厚度从276 nm降低到187 nm;薄膜在紫外光区的透射率减小,吸收边缘出现红移.

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