Fe₃O₄/ZnO bilayer for photoelectrochemical properties enhancement of current efficiency

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 (η) 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.