The 11-VI group semiconductors are of great importance due to their applications in various opto-electronic devices. Among these semiconductors, zinc sulfide is the most suitable for its utility in opto-electronic devices. Manganese doped ZnS nanoparticles (ZnS:Mn) with varying concentration of capping agent as well as of Mn2+ were synthesized by chemical precipitation method at room temperature. The optical properties get modified dramatically due to confinement of charge carriers with in the nanoparticles. The optical absorption studies show that the absorption edge shifts towards blue region as the capping agent concentration is increased indicating that the effective band gap energy increase with decreasing particle size while with the change in doping concentration no variation was observed in the absorption spectra.
ZnS: Mn nanoparticles, SEM, Luminescence, Optical properties
