This research focuses on the synthesis of single layer Fe2O3 and Fe2O3/ZnO hybrid layers using the spray pyrolysis method with the aim of conducting photoelectrochemical studies on samples that have been synthesized with volume variations of 10 and 30 mL in each layer variation (Fe2O3, Fe2O3/ZnO, ZnO/Fe2O3) which was annealed at 500˚C. Photoelectrochemical studies using the LSV method showed t…