TiO_2/MoO_3复合薄膜的制备及其电致变色性能研究  

Preparation and Electrochromic Properties of TiO_2/MoO_3 Composite Film

作　　者：亢嘉琪[1] 杨继凯[1] 杨馥瑜[1] 陈张笑雄 王国政[1] 端木庆铎[1] 

机构地区：[1]长春理工大学理学院,长春130022

出　　处：《光子学报》2018年第3期69-77,共9页Acta Photonica Sinica

基　　金：国家自然科学基金(No.51502023);吉林省科技开发项目(Nos.20150203012GX;20160520114JH);吉林省教育厅项目(No.20160358)资助~~

摘　　要：在导电玻璃上水热生长TiO_2纳米线,随后利用电沉积技术涂覆MoO_3薄膜,制备出TiO_2/MoO_3复合薄膜.通过X射线衍射、扫描电子显微镜表征证实了TiO_2/MoO_3复合薄膜的形成.利用电化学测试方法,在LiClO_4/PC溶液中对Li+的注入/抽出进行了研究,采用紫外可见分光光度计对薄膜着色、退色状态的光透过率进行测试.得到了切换时间、循环可逆性、光调制和着色效率等参数.对其电致变色性能进行分析,分析表明,与单一TiO_2和MoO_3薄膜的电致变色性能相比,复合薄膜的电致变色性能有明显增强.同时研究了不同厚度MoO_3薄膜对复合薄膜变色性能的影响,研究表明沉积6个循环MoO_3薄膜的TiO_2/MoO_3复合薄膜具有最佳的电致变色性能.TiO2 nanowire arrays were generated on FTO glass by hydrothermal method,and then the TiO2/MoO3 composite film was prepared through electrodepositing MoO3 coating onto TiO2 nanowire arrays.The formation of TiO2/MoO3 composite films were confirmed by X-ray diffraction and scanning electron microscope.Li＋insertion/extraction in LiClO4/PC solution had been studied by electrochemical measurement technologies,and the optical transmittance of the samples in the colored and bleached states were used by UV-Vis NIR spectrophotometer.The parameters of switching time,reversibility,optical modulation and coloration efficiency were obtained.Then,the electrochromic properties were analyzed.The analysis showed that the electrochromic properties of the TiO2/MoO3 composite films were obviously enhanced for comparing with the TiO2 nanowire and MoO3 films.The effects of different thickness MoO3 coating on the discoloration properties of the composite films were studied.The results showed that TiO2/MoO3 composite films with 6 cycles of MoO3 thin films had the best electrochromic performance.

关 键 词：薄膜 电致变色 电化学测试 光透射率 TIO2 MOO3 

分 类 号：O646[理学—物理化学] O614[理学—化学]