A ZnFe2O4–ZnO nanorod array p–n junction composite and its photoelectrochemical performance

Abstract

A ZnFe₂O₄–ZnO nanorod array (NRA) with a three-dimensional network nanometer structure was prepared. The photoelectrochemical performance of the ZnFe₂O₄–ZnO NRA composite is significantly improved due to the formation of a p–n heterojunction electric field at the interface between ZnFe₂O₄ and ZnO, the increase of the overall utilization efficiency of incident light energy, and the visible light absorption capability of ZnFe₂O₄.