This work is a short review of recent studies on photoelectrochemical reduction of carbon dioxide (CO2). Photoelectrochemical reduction of CO2 is a light-driven CO2 reduction, which harnesses solar energy to convert CO2 into higher-energy products (e.g., liquid fuels). Studies on photoelectrochemical cell have mainly focused on photoelectrochemical H2 production via water splitting, but, recently, photoelectrochemical reduction of CO2 have been actively investigated as a part of the artificial photosynthesis studies. In this short review, the recent literature on photoelectrochemical reductions of CO2 is reviewed. Various photoanode and photocathode materials are compared and different approaches to enhancing solar-to-fuel efficiency and selectivity of target product are described.
