Highly efficient photoelectrochemical water splitting by a hybrid tandem perovskite solar cell.
Herein, we show that graphene can be fully utilized to function as an electrocatalyst in highly efficient photoelectrochemical water splitting. Combining a solution processed organic photovoltaic and the state of the art perovskite solar cell in a tandem architecture yields a stable short circuit water splitting photocurrent of ~7.25 mA cm( 2) under 1 sun illumination. The ~7.25 mA cm( 2) photocurrent corresponds to a solar to hydrogen efficiency of 9.02% which is the highest efficiency yet reported for water splitting based on a hybrid tandem perovskite solar cell.
Chemical communications