This research focuses on the synthesis of a thin film as a ZnO-based photoelectrode with the aim of conducting a photoelectrochemical study of the pyrolysis spray results in a certain volume variation of the solution. The variation of the solution in the synthetic ZnO thin film was 10, 20, 30, and 40 mL. X-Ray Diffraction (XRD) characterization was used to determine the presence of the phase fo…