Organic−inorganic hybrid perovskites: Game-changing candidates for solar fuel production

Producing chemical fuels from solar energy via photochemical reactions represents an attractive approach for the conversion and storage of sunlight. In this context, identifying suitable semiconductor materials capable of driving solar fuel production with high efficiency and stability has been under extensive investigation. Organic−inorganic hybrid perovskites, which possess excellent optoelectronic properties, have been heavily studied in solar cell fields towards solar-to-electricity transformation. However, research on employing these materials for solar-to-fuel (STF) generation only initiated over the past few years yet there is no comprehensive review summarizing the recent exciting developments in this field with insightful analysis and outlook to date. Considering the great potential of hybrid perovskite materials for solar fuel production and the exponentially increasing research interest in this dynamic field, herein we present the recent advancement and future perspectives of organic−inorganic hybrid perovskites for the production of solar fuels. We detail the fundamentals and the most representative advancements in this field according to the different types of the solar fuel production system, including photocatalytic systems, photovoltaic-biased electrosynthetic cells, and photovoltaic-biased photoelectrochemical cells, respectively. The most challenge issues and possible solutions in this field are then discussed. We conclude with pointing out the efforts that should be devoted to enable more efficient and stable solar fuel production with hybrid perovskites.