Quasi-solid state dye-sensitized solar cells based on gel polymer electrolyte with poly(acrylonitrile-co-styrene)/NaI+I2

Gel polymer electrolyte based on poly(acrylonitrile-co-styrene)/NaI+I₂ and binary solvent mixture was prepared. When the system contains 0.5 M NaI and 0.05 M I₂, the maximum ionic conductivity (at 30 °C) of 2.37 mS cm⁻¹ was achieved. Based on a gel polymer electrolyte with 0.5 M NaI, 0.05 M I₂ and 0.5 M 4-tert-butylpyridine, a quasi-solid state dye-sensitized solar cell was fabricated and its overall energy conversion efficiency of light-to-electricity of 2.75% was achieved under irradiation of 60 mW cm⁻².