低温制备柔性染料敏化太阳能电池TiO_2薄膜电极

Low-temperature preparation of TiO_2 thin film electrodes for flexible DSSC

通过钛酸正丁酯的溶胶与TiO2粉末混合配制室温涂膜浆体,采用常压水热处理涂敷TiO2薄膜,获得柔性染料敏化太阳能电池的TiO2薄膜电极。分析钛酸正丁酯溶胶经过水热处理后产生的TiO2粒子的晶型和比表面积,并对电极的表面形貌、紫外可见吸收光谱以及组装柔性电池的光电性能进行表征。研究表明,钛酸正丁酯溶胶经过常压水热处理产生锐钛矿晶型的TiO2粒子,比表面积为280m2/g;TiO2薄膜电极是多孔的,并且敏化电极吸收光谱的吸光度增大;组装柔性电池的最高光电转换效率可达1.32%。

TiO2 thin film electrodes of flexible dye sensitized solar cell were successfully prepared by hydrothermal treatment at room temperature. The pastes were consisted of P25 and tetrabutyl titanate sol. The crystal structure and the specific surface area of TiO2 particles hydrolyzed by tetrabutyl titanate sol were analyzed. The surface morphology of photo electrode, absorbance spectra and cell photoelectric performance were measured. It is found that the titanium dioxide hydrosol is composed of anatase phase with specific surface area of 280m^2/g. The surface morphology of TiO2 thin film electrode is porous, and the absorbance values of its sensitized absorbance spectra increase. The best photoelectric conversion efficiency of flexible DSSC is 1.32%.