中文摘要：

染料敏化太阳能电池对电极上用于催化的铂的浓度对电池的光电转换性能有重要的影响,特别是当光从对电极射入染料敏化太阳能电池（DSSC）时。制备了不同铂浓度对电极的电池,研究了光从对电极入射时,铂对内部阻抗、光吸收效率等的影响,优化出最佳的铂浓度。结果表明,10mmol/L为最佳对电极入射铂浓度,在一定浓度范围内,开路电压（Voc）和转换效率（η）随着铂浓度的升高呈现先升高后降低的趋势;铂浓度对短路电流（Isc）的影响在光从对电极射入时较为明显,随着铂浓度的增加Isc降低。

英文摘要：

Pt concentration have significant impact for the property of platinized counter electrode and the performance of the dye-sensitized solar cell（DSSC）,especially when illuminate the cell through the counter electrode（CE）.In this research,DSSCs were based on CEs with Pt films of different concentration,the effects of the concentration of Pt film on impedence,light harvest when illuminate the cell through the CE were investigated.The result showed that 10mmol/L was the best Pt concentration illuminated through the CE,in a certain concentration range,open circuit voltage and energy conversion efficiencies at first increased and then decreased with the increase in the Pt concentration,at the same time short-circuit current decreased.