Zn film and Zn/Mg multilayered films were subjected to hot water treatment in ultrapure water at 368 K, and treated films
were analyzed using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and ultraviolet-visiblenear
infrared (UV-Vis-NIR) spectrophotometry. Mg layer insertion was shown to enhance the oxidation of Zn and modify
surface morphology, resulting in enhanced optical properties as an anti-reflection coating.