Fe3O4/ZnO bilayer for photoelectrochemical properties enhancement of current efficiency

Abstract

This study aims to investigate the effect of Fe3O4/ZnO bilayers on photoelectrochemical properties. The Fe3O4 was fabricated by a spin coating method on the ITO coated glass substrate. While the ZnO layer was coated on Fe3O4 films using a doctor blade method. The Fe3O4/ZnO bilayer was characterized by X-ray diffraction and scanning electron microscopy (SEM) for Structural properties and surface morphology, respectively. Photoelectrochemical properties were investigated using cyclic voltammetry (CV) measurements by the potentiostat. The results of Fe3O4/ZnO bilayer is compared by Fe3O4 dan ZnO films. The XRD result showed that the crystal structure of ZnO and Fe3O4 are hexagonal and cubic spinel, respectively. The SEM results showed that the ZnO layer is more homogeneously distributed and thicker rather than the Fe3O4 layer. The photoelectrochemical properties of current density and the efficiency (?) of Fe3O4/ZnO bilayers are higher compare to Fe3O4 dan ZnO films. It means that the Fe3O4 layer can improve the photoelectrochemical properties of the ZnO film.