【作者】 李丽； 陈人杰； 吴锋； 张贵友； 陈实；

【Author】 LI Li~(1,2),CHEN Ren-jie~(1,2),WU Feng~(1,2),ZHANG Gui-you~1,CHEN Shi~(1,2) (1.Beijing Key Laboratory of Environmental Science and Engineering,Beijing Institute of Technology, Beijing 100081,China; 2.National Development Center of Hi-tech Green Materials,Beijing 100081,China)

【机构】 北京理工大学化工与环境学院北京市(环境科学工程)重点实验室； 国家高技术绿色材料发展中心；

【摘要】 分别以钛酸四异丙酯和钛酸四正丁酯为钛源,采用水热法合成制备了TiO₂纳米材料。考察了热处理温度对不同钛源制备的TiO₂材料晶体结构、表面形貌及电极的光谱特性的影响,得出制备TiO₂纳米晶膜电极的最佳钛源及合成条件。结果表明,TiO₂材料的晶型结构与颗粒粒径对DSSC的开路电压、短路电流、填充因子以及光电转换效率有较大影响。经过50℃热处理后,光电转换效率可达4.36%,钛酸四异丙酯更适合作为制备染料敏化太阳能电池电极的钛源。更多还原

【Abstract】 In this paper,tetraisopropyl titanate and tetra-n-butyl titanate were used as titaniume source to prepare the TiO₂ nano-material by the hydrothermal method.The effect of heat treatment temperature on the crystal structure,surface morphology and spectral characteristics of the prepared TiO₂ electrode has been studied. The best titaniume source and synthesis conditions are obtained.The results indicated that the crystal structure and particle size of TiO₂ have an obvious effect on the performance of DSSC,such as open circuit voltage,short circuit current,fill factor and conversion efficiency.After 450℃heat-treatment,photoelectric conversion efficiency is 4.36%and tetraisopropyl titanate is more suitable for the preparation of TiO₂ electrode for dye-sensitized solar cells.更多还原