OICC Press International Nano Letters 2228-5326 5 2 (June 2015) 2015 02 01 Preparation and characterization of Mn-doped ZnS nanoparticles 10.1007/s40089-015-0139-6 EN L. Bruno Chandrasekar Department of Physics, The American College, Madurai, 625002, IN R. Chandramohan Department of Physics, Sree Sevugan-Annamalai College, Devakottai, 630303, IN R. Vijayalakshmi Department of Physics, Thiagarajar College of Arts and Science, Madurai, 625009, IN S. Chandrasekaran School of Chemical Engineering and Bioengineering, University of Ulsan, Ulsan, 680-749, KR Journal Article 2015 02 01 Abstract Mn-doped ZnS nanoparticles are synthesized by simple and cost effective chemical precipitation method. This diluted magnetic semiconductor is characterized by various techniques such as energy dispersive X-ray analysis, scanning electron microscopy, X-ray diffraction, photoluminescence and UV–Vis spectroscopy. High purity of the sample is confirmed by energy dispersive 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, Urbach 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.