Investigation on the Structural and Optical Properties of Mn2+ Doped MgS Nanoparticles Synthesized by Hydrothermal Method

Mn2+ (0, 2 & 4 %) doped with MgS nanoparticles were obtained successfully using simple hydrothermal method. The effect of the dopant Mn2+ ion on the MgS structure, particle size and morphology were investigated through the various spectroscopic and microscopic techniques. Powder XRD measurement confirmed the formation of stable rock-salt crystal structure for the Mn2+ (0, 2 & 4%) doped MgS samples. Spherical and plate-like particle morphology were witnessed from SEM and TEM analysis and the elemental composition were studied using energy dispersive X-ray (EDX) spectrum. FTIR (Fourier Transform Infrared) vibrational peaks confirms the Mn2+:MgS compounds formation. UV-vis absorption peak was red shifted and the optical transmittance nature was improved by 45 % on doped Mn2+ with the MgS compound. Photoluminescence (PL) emission peaks intensity was enhanced in the visible portion and the UV emission peaks shift were observed for the Mn2+-doped MgS samples. These improved structural and optical behaviour of the prepared Mn2+:MgS samples were desirable for the optical applications.