Barium Staminate as Semiconductor Working Electrodes for Dye-Sensitized Solar Cells

Abstract

Dye-sensitized solar cells (DSSCs) are fabricated with perovskite-typeBaSnO3as the photoelectrode materials. Different preparation methods including coprecipitation, hydrothermal, and solid state reaction are employed to synthesizeBaSnO3particles to optimize the photoelectric activities of electrode materials. The photoelectric properties ofBaSnO3particles and the performances of DSSCs are investigated by surface photovoltage spectroscopy and current-voltage measurements. The light-to-electricity conversion of 1.1% is preliminarily reached on the DSSC made of the coprecipitation-derivedBaSnO3particles. Large current density of hole injection into the HOMO level of N719 dye from the valence band ofBaSnO3and reduced photogenerated charge recombination inBaSnO3could be responsible for the observed solar cell performance of the DSSC fabricated from the coprecipitation-derivedBaSnO3particles.