Morphological Studies on Ag Doped CdZnS Alloy Nanostructures

摘要

Ag doped CdZnS alloy nanostructures are synthesized by means of chemical methods. The stoichiometry and elemental analysis has been carried out with the energy dispersive X-ray (EDAX) and X-ray photoelec-tron spectroscopy (XPS) techniques. X-ray diffraction, transmission electron microscopy and scanning electron microscopy have been employed to determine the particle size, morphology and crystal structure of the alloy nanostructures. The incorporation of Ag ion at the lattice of Zn and Cd alloys shift their binding energy towards higher energy as evidenced from XPS. The XPS measurements have been performed before and after 4 keV Ar~+ ion sputtering of the samples that gives a new way to interpret the XPS spectra of Ag doped CdZnS nanostructures, which may allow one to further understand the properties of this important material in relation to their full exploitation in optoelectronic devices.