The photolysis of water on a semiconductor electrode reported by Fujishima and Honda in the 1970s triggered intense research into semiconducting oxides for solar energy conversion. During the last decade, remarkable progress has been achieved in integrated photoelectrochemical devices, resulting in a solar-to-hydrogen efficiency above 19%. The rapid progress in perovskite-based solar cells and electrocatalysis has also opened new opportunities for solar-driven electrolysers. Beyond water-splitting, solar-driven CO2 reduction to chemical fuel is an environmentally-friendly solution for future energy demands. Buried junction geometry enables us to expand the scope of chemical reactions beyond water-splitting toward other chemical reactions depending on the type of catalyst. These advances have been driven by the synthesis of new materials and their integration into photochemical devices. This also includes materials for surface protection, membranes and immobilized molecular catalysts on semiconductor electrodes. This Special Issue is dedicated to emerging inorganic materials for solar energy conversion.
Dr. Adam Slabon