Photoelectrochemical properties of ferrites with the spinel structure

Abstract

The photoelectrochemical properties of the ferrites ZnFe2O4, MgFe2O4 and Li0.5O4 with the spinel structure are reported. The ferrites seem reasonable candidates for photoanodes in a photoelectrochemical cell, because of their 2.2 eV bandgap. The results show, however, that the visible absorptivity, the flat-band potential and the recombination processes limit severely their use as photoanodes.