| 초록 |
In this work, a feasibility study on a new solid-state polymeric electrolyte system for DSSC (Dye Sensitized Solar Cell) was carried out to overcome intrinsic drawbacks of liquid-state electrolytes and to improve the overall efficiency of solar cell. A method for the solidification of electrolytes through the chemical cross-linking of imidazole cured epoxy system with Lithium iodide was introduced, initiated by thermal curing after being casted on dye soaked TiO2 film. For this study, polymeric electrolytes based on glycidyl end-capped poly(bisphenolA-co-epichlorohydrin), 3-(2-phenylimidazol-1-yl)propanenitrile, and LiI were prepared, and their ionic conductivity was evaluated under various curing conditions. The variation of ion conductivity as the conversion of cross-linking was investigated by impedance analyzer, and the relationship between the dissociation efficiency of Lithium Iodide and the structure of cured network was identified by FT-IR and DSC. |
