Abstract
Un- and Zn-doped Manganese Sulfide (MnS) nanoparticles (NPs) have been successfully synthesized through a microwave-assisted solvothermal process using MnCl2 and Na2S as the precursors with different Zn concentrations. The X-ray diffraction (XRD) patterns of the MnS NPs confirm their hexagonal structures. The results show that the average crystallite size of MnS decrease after doping MnS with Zn. Particles sizes of the Zn-doped MnS NPs is smaller than the un-doped sample and the samples include spherical like structures with negligible agglomeration. Optical studies demonstrate increase of optical band gap and, also, a blue shift in the emission band of MnS upon doping. UV-Vis and photoluminescence (PL) spectroscopies determine that each sample possesses one absorption peak and three emission bands in the visible light spectrum. Furthermore, the results reveal the effect of dopant on the electrical properties of MnS.
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