Photo-cathode manufacturing method, photo-cathode and photoelectrochemical water decomposition method using the same

摘要

The photoelectrochemical water decomposition photo-cathode manufacturing method according to the present invention uses a) a first liquid including a first chalcogen source, a first before and after metal source, a diamine-based solvent and a mercapto alcohol-based solvent on a conductive film to form a light absorption film of the metal chalcogenide after the transition; and b) a second chalcogen source providing the same kind of chalcogen as the first chalcogen source on the light absorption film, and a second post-transition metal source providing the same kind of post-transition metal as the first post-transition metal source. , Using a second liquid containing an alkanolamine-based solvent and a mercapto acid-based solvent, the nanorod structure of the post-transition metal chalcogenide extending from the light absorption film and the same as the post-transition metal chalcogenide of the light absorption film Including; forming a.