Bismuth sulphide sensitized tin oxide photoelectrode for solar cell application

The present study demonstrates the chemical bath deposition of Bi 2 S 3 over previously prepared porous photoanode of SnO 2 for solar cell fabrication. Deposition of Bi 2 S 3 onto SnO 2 photoanode is carried out at 27 °C for 30, 60 and 120 m, showing structural modification and different Bi/S ratio with increase in deposition time. An enhancement in the optical absorbance is observed as a function of deposition time. The best photovoltaic performance is observed for the deposition time of 30 m. The obtained photovoltaic performance is correlated with the structural, optical and elemental analysis of the sensitized photoanodes, finding a qualitative role of recombination resistance in determining the photoconversion performance.