Preparation and characterization of Mn-doped ZnS nanoparticles

Abstract

Mn-doped ZnS nanoparticles are synthesized by simple and cost effective chemical precipitation method. This diluted magnetic semiconductor is charac-terized by various techniques such as energy dispersive X-ray analysis, scanning electron microscopy, X-ray dif-fraction, photoluminescence and UV–Vis spectroscopy. High purity of the sample is confirmed by energy disper-sive X-ray analysis. Sub-micrometer nanocrystals are observed using scanning electron microscope. Hexagonal phase of the material is confirmed by X-ray diffraction studies, and the micro-structural properties such as grain size, strain, dislocation density and texture coefficient are examined. High value of texture coefficient indicates the well-crystalline nature of the material. The band gap, Ur-bach energy and steepness parameter are calculated from the absorption spectrum. The band gap is also calculated from photoluminescence. The Stokes's shift, Urbach energy and steepness parameter are reported in the case of Mn-doped ZnS for the first time.