Enhanced Stability of Photoelectrodes with Electrogenerated Polyaniline Films

Abstract

Polyaniline was electrodeposited on platinum and semiconducting (Cd‐chalcogenides, Si, , ) electrodes from aqueous solution containing aniline. The electrochemical behavior of such films was examined in aqueous and nonaqueous solutions by cyclic voltammetry. Results show that the polyaniline film is conducting in both cathodic and anodic regions at as evidenced by the electrochemical redox reactions of various redox couples on polyanilinecoated electrodes. In general, all polyaniline‐coated semiconductor electrodes examined in this work exhibited enhanced stability of the photocurrent when compared to that of the naked electrodes.