Perovskite semiconductors for photoelectrochemical water splitting applications

Perovskite oxide semiconductors have been used as efficient electrocatalysts for electrochemical reactions using an external applied bias. The review describes the different alternatives to use perovskite materials as photoelectrocatalysts for the conversion of solar energy into chemical bonds. The main requirements for a photoelectrochemical configuration are first discussed. Recent development in lead halide perovskite for photovoltaic applications has improved the understanding on the design rules that link chemical compositions with electrical and optical properties. It is shown that some recent literature examples using metal oxide perovskites support the validity of the design rules. The different alternatives in device configurations are discussed in terms of stability of the perovskite material.