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%.
出处
《材料导报》
EI
CAS
CSCD
北大核心
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)
