Visible light responsive semiconductor photoelectrode manufacturing method, visible light responsive semiconductor photoelectrode, and water splitting reaction apparatus using the electrode.

摘要

PROBLEM TO BE SOLVED: To provide a visible light responsive semiconductor photoelectrode for water decomposition which has a high visible light absorption and a high solar energy conversion efficiency in a simple way.SOLUTION: The method for manufacturing a visible light responsive semiconductor photoelectrode comprises the steps of: adding a polymer compound having a decomposition temperature of 100 degree or higher and an oxidant to a precursor solution including metal ions for preparing a visible light responsive semiconductor; and preparing a porous semiconductor film while decomposing an organic compound into components at a temperature lower than a decomposition temperature of the compound by a decomposing action of the oxidant. Thus, a high-performance visible light responsive semiconductor photoelectrode can be obtained.