BaSnO₃ Perovskite nanoparticles for high efficiency dye-sensitized solar cells

The synthesis of highly crystalline perovskite BaSnO₃ nanoparticles for use as photoanode materials in dye-sensitized solar cells (DSSCs) is reported, and the photovoltaic properties of DSSCs based on BaSnO₃ nanoparticles (BaSnO₃ cells) are demonstrated. The resulting DSSCs exhibit remarkably rapid charge collection and a DSSC fabricated with a BaSnO₃ film thickness of 43μm leads to a high energy conversion efficiency of 5.2 %, which is one of the highest reported for ternary oxide-based DSSCs. More importantly, the BaSnO₃ cells show superior charge collection in nanoparticle films compared to TiO₂ cells and could offer a breakthrough in the efficiencies of DSSCs.