TiO_2纳米晶半导体电极及有机-无机电致变色器件的研究  

TiO_2 Nanocrystralline Semiconductor Electrode and the Organic-Inorgnic Electrochromic Devices

作　　者：葛万银[1] 李永祥[1] 于晓峰[1] 杨群保[1] 

机构地区：[1]中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室

出　　处：《无机材料学报》2006年第1期128-132,共5页Journal of Inorganic Materials

基　　金：上海市科学技术委员会纳米技术专项(0352nm008)韩国三星先进技术研究院(SAIT)

摘　　要：通过丝网印刷工艺,制备了具有高的比表面积的纳米晶氧化钛薄膜,通过有机／无机复合,在氧化钛薄膜表面吸附了单层的电变色子,制备成纳米晶电极并且装配成三明治结构的电致变色器件．通过紫外可见分光光度计表征,该器件的着色态透过率为4％,退色态透过率为85％．其在智能窗、平板显示器、电子书和电子报纸等领域具有潜在的应用前景．Nanocrystralline TiO2 semiconducting electrode was prepared by using a screen-printing technique. The electrode has very high specific surface-to-volum area which is crucial for the absorption of more chromophores on the surface. The electrochromic device was assembled by using a sandwich structure after the electrode absorbed chromophore molecules. The electrochromic device was characterized by UVoVis spectra. The electrochromic device has a very high transparency at its bleached states （85%）, and deep violet at its colored states （4%）, which has potential use in smart window, flat panel display, electric book and electric papers.

关 键 词：丝网印刷 纳米晶 二氧化钛 电致变色 

分 类 号：TB34[一般工业技术—材料科学与工程]