Protection of Semiconductor Photoanodes with Photoelectrochemically Generated Polypyrrole Films

Abstract

Results are presented which show that photoelectrochemically generated polypyrrole films protect semiconductor photoanodes (e.g., Cd chalcogenides,, and Si), from degradation while permitting electron exchange between the semiconductor and the electrolyte. The performance characteristics and stability of such film‐covered photoelectrodes are discussed.