Photoelectrocatalysis by metal phthalocyanine evaporated films in the oxidation of oxalate ion

Abstract

The photoelectrode process of metal phthalocyanine electrodes was studied in the reaction of hole capture by oxalate ions. The photo-response was explained by assuming that the charge carriers decay in a bimolecular recombination and that the electrochemical reaction rate is proportional to the number of charge carriers. The dependence of the photo-action upon the wavelength of the radiating light was related to the absorption spectra of the metal phthalocyanine.