Influence of ionic additives NaI/I{sub}2 on the properties of polymer gel electrolyte and performance of quasi-solid-state dye-sensitized solar cells

摘要

The ionic additives NaI/I{sub}2 in polymer gel electrolyte not only provide cations, but also affect the liquid electrolyte absorbency of the poly(acrylic acid)-poly(ethylene glycol) hybrid, which results in the change of ionic conductivity of polymer gel electrolyte and the photovoltaic performance of quasi-solid-state dye-sensitized solar cell. With the optimized components of liquid electrolyte containing 0.5 M Nal, 0.05 M I{sub}2,0.4 M pyridine, 70vol.% γ-butyrolactone and 30vol.% N-methylpyrrolidone, a 4.74% power conversion efficiency of quasi-solid-state dye-sensitized solar cell was obtained under 100mWcm{sup}(-2) (AM 1.5) irradiation.