摘要:Pure and Pb doped CdS films were prepared by chemical bath deposition method onto glass substrates at room temperature. The structural and optical properties of the prepared films were characterized using XRD and UV-VIS spectroscopy. X-ray diffraction patterns revealed polycrystalline nature of the films. The particle size of the crystallites was determined from the XRD patterns using Scherrer formula and was found to be 27.31 nm for CdS film. The particle size shows change in case of the Pb doped film. The bandgap for CdS film as determined from the absorption spectrum is found to be 3.82 eV for CdS film, which decreases on doping with Pb.