Judicious balancing of photon utilization between semitransparent nanopillar perovskite solar cells and multilayer Sb2Se3 photocathodes enables high efficiency water splitting with good stability.
The search for earth-abundant materials that can be used in solar water splitting cells remains an important goal for affordable and environmentally friendly methods for energy conversion and storage.
Bias-free solar water splitting is demonstrated using thin film silicon based triple and quadruple junction solar cells with solar-to-hydrogen efficiencies up to 9.5%.