Highly transparent graphene oxide composited TiO2 thin film as efficient photoanode for dye-sensitized solar cells

Here we report the fabrication of highly transparent graphene oxide (GO) reinforced TiO2 nanocomposite thin film and demonstrate that it enhances power conversion efficiency dye-sensitized solar cells (DSSC) when used as photoanode. TiO2-GO films with varying GO concentrations are deposited on top fluorine doped tin (FTO) coated glass substrate by easy, cost-effective sol-gel spin coating technique. Microstructural optical characterizations confirm formation transparent, uniform comprised rutile phase nanoparticles. The estimated band gap pristine is ~3.34 eV which decreased slightly concentrations. photoanode a basic DSSC structure has been fabricated using commercially available N3 dye photosensitizers, conventional iodine solution (I-/IM3+) electrolyte FTO-coated counter electrode. current-voltage characteristics measured under illumination 1 SUN AM1.5 spectrum show significant enhancement short circuit current density (Jsc) (η) concentration in attributed to less recombination photogenerated charge carriers better transport facilitated conduction network.