Influence of dye loading time and electrolytes constituents ratio on the performance of spin coated zno photoanode based dye sensitized solar cells

Abstract

ZnO photoanodes for dye sensitized solar cell were sythesized by using sol-gel spin coating method. XRD pattern confirmed that ZnO film was crystalline in nature and crystallite size calculated was 45.8 nm. The grain size measured form SEM image of ZnO film was 66.6 nm. Transmission of thin film was observed 75-92% in wavelength range from 400-800nm. The photon to electron conversion effieciency for dye loaded 6 and 12 hours time were obtained 0.38% and 0.44% respectively. In case of electrolytes ratio, the maximum effieciency and fill factor of DSSCs were found 0.44% and 0.49 respectively.