中文摘要：

研究了TiO2表面染料的吸附状态不同时，染料敏化太阳能电池（DSC）的光电转换性能，并采用电化学交流阻抗技术（EIS）考察了不同染料吸附状态下DSC中的电子界面复合效应。结果表明，在非饱和吸附染料状态下，通过调整TiO2薄膜表面染料分子吸附量，可以降低界面电荷复合效应，使电子在TiO2薄膜的传输过程中寿命增加，从而提高DSC的填充因子。

英文摘要：

The photoelectric conversion properties of dye sensitized solar cells （DSC） with different status of dye adsorption on the TiO2 surface were investigated. The recombination effect of electrons in the DSC under differ- ent status of dye adsorption was characterized by electrochemical impedance spectra （EIS）. The results showed a decline of electron recombination at interface under the condition of unsaturated dye adsorption through adjus- ting the dye loading amount on the TiO2 film, which increased the lifetime of electrons transport in the TiO2 film and enhanced the fill factor of the DSC.