用于染料敏化太阳能电池的聚酯型聚氨酯凝胶电解质的研究

Study on Polyester Polyurethane Gel Electrolytes for Dye-sensitized Solar Cells

通过改变PEG分子量、有机溶剂和碘盐等条件制备了不同系列的聚酯型聚氨酯凝胶电解质。研究发现,当PEG分子量为10000,以1,4-丁内酯为有机溶剂,以NaI/I2为氧化还原电对时,得到的聚氨酯凝胶电解质的电导率最高,达到5.61mS/cm。基于该凝胶电解质的染料敏化纳米晶TiO2太阳能电池在100mW/cm2的入射光强下电池的光电转换效率达到4.06%。

Three series of polyester polyurethane gel electrolyte were prepared by changing the preparation conditions, such as PEG molecular weight, organic solvents and iodide salt. Polyurethane （PU） gel electrolyte with conductivity of 5.61 mS/cm was obtained when it was prepared from PEG10000, using 1,4-butyrolactone （GBL） as organic solvent, and NaI/Iz as redox couple. Based on the optimum PU gel electrolyte, a dye-sensitized nano-TiO2 solar cell was assembled with photoelectric conversion efficiency of 4. 06% under 100 mW/cm2 irradiation.