Production of lead(II) sulfide and bismuth(III) sulfide quantum dot decorated titanium dioxide/electrochemically reduced graphene oxide fotoanodes for quantum dot sensitized solar cells

The increasing energy demand around the world, the decrease in fossil fuel reserves that meet this need, and problems such as global warming push researchers to search for renewable, cheap and clean energy sources. In this study, the electrochemical synthesis of titanium dioxide/electrochemically reduced graphene oxide photoanodes decorated with lead(II) sulfide and bismuth(III) sulfide quantum dots separately for quantum dot sensitive solar cells was presented. X-ray photoelectron spectroscopy, X-ray powder diffraction spectroscopy, scanning electron microscopy methods and photocurrent density-time, photocurrent density-voltage measurements were used for the structural, morphological and photoelectrochemical characterization of the synthesized photoanodes. Within the scope of the measurements, it has been determined that the designed quantum dot sensitized solar cells have promising filling factors and conversion efficiencies.