二氧化钛纳米晶溶胶内渗透电极对染料敏化太阳能电池的光伏性能的提高.docxVIP

物理化学学报(Wuli Huaxue Xuebao) October Acta Phys.-Chim. Sin., 2010,26(10):2745-2751 2745 [Article] 二氧化钛纳米晶溶胶内渗透电极对染料敏化太阳能电池的 光伏性能的提高 钱迪峰1 张青红1,* 万 钧2 李耀刚1 王宏志1 (东华大学纤维改性国家重点实验室，上海 201620; 2 东华大学教育部先进玻璃制造技术工程中心，上海 201620) 摘要： 以自制的过氧钛酸(PTA) 水溶液为前驱体，用水热法制备了透明锐钛矿相二氧化钛溶胶.无需有机添加 剂可得到直径小于7nm 的棒状二氧化钛纳米晶溶胶.通过将溶胶内渗透到染料敏化太阳能电池(DSSCs) 的多孔 二氧化钛电极后，消除了多孔电极内的大孔并改善了电极内纳米晶之间的连通性.用扫描电子显微镜(SEM) 和光学轮廓仪对溶胶内渗透后的光阳极进行了表征.结果表明：小颗粒棒状二氧化钛纳米晶附着在多孔的二氧 化钛表面，填充了电极由于烧结产生的大孔，并在多孔的二氧化钛内部形成了有利于电子传输的网络结构.与未 经处理的多孔电极相比，改性后的光阳极组装成染料敏化太阳能电池后光电转化效率提高了64%, 关键词： 溶胶； 内渗透； 电极界面； 二氧化钛； 染料敏化太阳能电池 中图分类号： 0646; 0644 Enhancing the Photovoltaic Performance of Dye Sensitized Solar Cells with the TiO?Sol Infiltrated Nanocrystalline Electrode QIAN Di-Feng ZHANG Qing-Hong WAN Jun2 LI Yao-Gang WANG Hong-Zhi (State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, P.R.China; 2Engineering Research Center of Advanced Glasses Manufacturing Technology, Ministry of Education, Donghua University, Shanghai 201620, P.R.China) Abstract: Transparent anatase titanium dioxide sol was prepared by the hydrothermal treatment of the home-made water soluble peroxotitanium acid (PTA). The nanorod-like TiO? nanocrystals with a mean diameter of less than 7 nm were obtained in the absence of organic compounds. In order to eliminate the large pores derived from eletrode sintering and improve the connectivity among particles in the porous TiO2 electrode, the as-prepared TiO2 sol was infiltrated to the porous TiO?photoanode for dye sensitized solar cells (DSSCs). As a result, small nanocrystals of titanium dioxide attache