Numerical Simulation on Optical Characteristics of ZnO/Cu/ZnO Thin Film

This paper investigates optical characteristics of ZnO/Cu/ZnO multilayer optical thin film by numerical simulation and it is further verified by experiments. The influences of Cu and ZnO thickness on the optical characteristics of ZnO/Cu/ZnO thin films are studied. The results show that the transmittances of ZnO/Cu/ZnO thin film decrease with the increase of thickness of Cu layer but are nonlinear with the ZnO thickness. The maximal light transmission in the visible region is obtained by controlling the thickness of Cu and ZnO films.