Study of cadmium sulfide thin films as a window layers

Cadmium sulfide (CdS) thin films of different thicknesses were deposited on corning glass by closed space sublimation (CSS) technique in a vacuum. Structural, electrical, optical, Fourier transform infrared (FTIR) with Raman spectrometric properties were investigated. X-rays diffraction used to identify the preferred orientation of CdS thin films as well as crystalline size, dislocation density and strain vs thickness was estimated. The electrical properties like resistivity, mobility vs thickness was calculated at room temperature. Optical properties were investigated from UV-VIS-NIR ranges which were used to calculate band gap, thickness of the films, also samples were placed at different angles in spectrophotometer to investigate the effect of angles variation on %T and band gap. Raman spectroscopy for identification of vibration modes in thin films by varying thickness.