热处理对V_2O_5-TiO_2复合薄膜表面结构与光学性能的影响  

Effect of heat treating on structure and optical properties of composite V_2O_5-TiO_2 thin films

作　　者：李德增[1] 吴广明[1] 王爱荣[1] 肖锟[1] 沈军[1] 周斌[1] 张志华[1] 

机构地区：[1]同济大学波耳固体物理研究所,上海200092

出　　处：《功能材料》2008年第6期885-888,共4页Journal of Functional Materials

基　　金：国家自然科学基金专项基金资助项目(50752001);上海市科委基础研究重点资助项目(07JC14052);上海市重点实验室资助项目(07DZ22302);上海市教委科研创新资助项目(08ZZ22)

摘　　要：以钛酸丁脂、V2O5粉末为前驱体,采用溶胶-凝胶法制备了V2O5-TiO2复合薄膜,并采用X射线光电子能谱(XPS)和Uv-vis-nir分光光度计等方法研究了热处理对薄膜性能的影响。结果表明,随热处理温度的升高,复合薄膜中钛离子的价态不变,仍为Ti4+;而V4+离子逐渐被氧化为V5+离子;并采用氢氧基团、碳氧键与多种钒离子进行叠加拟合,拟合结果与实验曲线非常符合;V2O5-TiO2复合薄膜在紫外光波段的透射率减小,吸收带边出现红移。V2O5-TiO2 composite thin films were prepared by sol-gel process with Ti（C4 H9O）4 and V2O5 powder as the starting materials. The thin films were characterized by XPS and UV-vis-nir speetrophotometer. With increase of heating temperature,content of V^4＋ decreases and that of V^5＋ increases gradually while that of Ti^4＋ remains as beforel theoretical curves of the film agree with the experimental curves well through simulating of superposition integrallthe transmittance of the films in the ultraviolet range falls remarkably and the absorption edges take a red shift with the increase of heating temperature.

关 键 词：热处理 V2O5-TiO2复合薄膜 XPS 

分 类 号：O484.4[理学—固体物理]