Tuning optical properties of CdS films using oblique angle deposition technique

CdS films have been synthesized using a thermal evaporation method equipped with Glancing Angle Deposition technique at zero and different oblique incident flux angles (alpha = 20 degrees, 40, 50, 60, and 80 degrees). The physical properties of the samples were systematically investigated by X-ray diffraction (XRD), field emission electron microscopy (FESEM), and Ultraviolet-visible spectroscopy analyzes. The XRD analysis revealed the hexagonal structure of the films deposited at alpha = 0-80 degrees. The FESEM analysis confirmed the uniform formation of the nano columnar structure of CdS samples prepared at different values of alpha. Finally, high transmission of the sample produced at 80 degrees deposition angle in the wavelength range of 500-1100 nm has been shown rather than those deposited at the other deposition angles, despite its high thickness (approximately 500 nm).