ABSTRACT
It is known that the photoelectrochemical cell (PEC), which is composed of a photoelectrode, a redox electrolyte, and a counter electrode, shows a solar lightto-current conversion efficiency of more than 10%. However, photoelectrodes such as n-and p-Si, n-and p-GaAs, n-and p-InP, and n-CdS frequently cause photocorrosion in the electrolyte solution under irradiation. This results in a poor cell stability; therefore, many efforts have been made worldwide to develop a more stable PEC.
