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 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.

Structural, Optical and Antibacterial Activity of Pure and Cadmium Doped Zinc Oxide Nano Particles

“…Thus, the synthesis of ZnO nanoparticles by direct precipitation method is simple, fast and eco-friendly in nature [7]. Recently, Mn-doped ZnO nanoparticles was used in the optical device in diluted magnetic semiconductor materials [8].The Cu-doped ZnO has sensor RT sensitivity, faster response time, and good selectivity. Miniaturized Cu-doped ZnO rod based sensor can server as a good candidate for effective H2 detector with low power consumption.…”

Band Gap Tailoring, Size Modulation and Photoluminescence Properties of Mn/Cu doped ZnS Nanostructures

“…Within the different TMs, Mn was chosen as the rst doping material since it improves the emission properties, enhances the electrical, microstructural and optical characters and also possesses better photo and thermal stability [8]. Chandrasekar et al [9] discussed the variation in Urbach energy, Stokes's shift and steepness values in Mn added ZnS synthesized by co-precipitation technique. Ashkarran et al [10] revealed the decrease of photo-catalytic removal e ciency with the help of Bromocresol Green, Rhodamine B, and Bromochlorophenol Blue dyes in Mn added ZnS than un-doped ZnS.…”

“…The optical and structural evaluation of Mn or Cu doped ZnS [9][10][11] is available in the literature but the complete studies on Mn and Cu dual doped ZnS is nearly scanty. Therefore, Mn and Cu dual doped ZnS have been synthesized using co-precipitation method.…”

Tuneable luminescence properties of EDTA‐assisted ZnS:Mn nanocrystals from a yellow‐orange to a red emission band

“…Furthermore Mn 2+ helps in the production of improved luminescence properties along with the variation in particle size . The beneficial properties of Mn‐doped ZnS nanocrystals have created resounding interest among researchers who wish to develop these type of materials in different synthetic ways and explore their optical properties …”

“…[1] The beneficial properties of Mn-doped ZnS nanocrystals have created resounding interest among researchers who wish to develop these type of materials in different synthetic ways and explore their optical properties. [8][9][10] In our previous study, we reported the chemical precipitation and hydrothermal synthesis process for achieving semiconductor nanocrystals using different capping agents i.e. ZnS as host material and Mn 2+ as dopant.…”