| abstract |
A method of manufacturing a photoelectrode of an embodiment includes: preparing a stack including a first electrode layer having a light transmitting electrode, a second electrode layer having a metal electrode, and a photovoltaic layer disposed between the electrode layers; immersing the stack in an electrolytic solution containing an ion including a metal constituting a catalyst layer which is to be formed on the first electrode layer; and passing a current to the stack through the second electrode layer to electrochemically precipitate at least one selected from the metal and a compound containing the metal, onto the first electrode layer, thereby forming the catalyst layer. |