Synthesis and Characterization of Cadmium Sulfide Crystals Grown by DVT Technique

Cadmium Sulfide crystals were grown by direct vapor transport (DVT) from high-purity starting materials. The grown CdS crystals were orange in color, transparent, dendrite platelets shaped were observed. The structure of CdS crystals has been studied with the help of X-ray diffraction (XRD) and Transmission Electron Microscope (TEM). The crystals grown by DVT technique possess hexagonal structure. The morphology of the surface of the grown crystals was studied by the optical micrograph and the Scanning Electron Microscopy (SEM). The direct energy bandgap has been estimated from the absorption coefficient values using Tauc’s procedure which is found to be 2.37 eV.