TiO_2薄膜的制备及其电致变色性能  

Preparation and Electrochromic Performance of TiO_2 Thin Film

作　　者：牛微[1,2] 王刚[1] 刘旭东[1] 毕孝国[1] 孙旭东[2] 

机构地区：[1]沈阳工程学院能源与动力学院,沈阳110136 [2]东北大学材料与冶金学院,沈阳110819

出　　处：《材料导报》2014年第8期17-19,36,共4页Materials Reports

基　　金：国家自然科学基金(50172030);教育部中央高校基本科研业务费专项资金(N100702001)

摘　　要：采用溶胶-凝胶工艺在ITO导电玻璃基片表面制备了均匀致密的TiO2薄膜。采用XRD和TG-DTA表征了薄膜的结构和热重特性,使用电化学工作站和紫外-可见分光光度计研究了TiO2薄膜的电致变色性能。结果表明,外加电压控制在±2V、热处理温度为250℃时,TiO2薄膜为不定形结构,具有较好的电致变色特性,注入电荷密度为5.13mC·cm-2,循环可逆性K值为0.49,着色态透光率在60%以下,着色态、褪色态光谱透过率相差20%。TiO2 tilms were prepared by sol-gel methods on 1TO conductive glass substrate surface.Structural and thermogravimetric properties were investigated by XRD and TG-DTA,electrochromic properties were investigated by electrochemical workstation and ultraviolet visible spectroscopy.The results indicate that the TiO2 films have better electrochromic properties when the film are amorphous with heat treatment temperature at 250 ℃ and applied voltage of ±2 V with respect to the reference electrode.And injected charge density is 5.13 mC · cm^-2,cyclic reversibility K value is 0.49,transmittance is below 60% and the difference of transmittance between colored state and bleached state is 20%.

关 键 词：TIO2薄膜 电致变色 溶胶-凝胶 热处理 

分 类 号：TB34[一般工业技术—材料科学与工程]