In this paper we have reported the synthesis of luminescent nanoparticles of Zinc Sulfide (ZnS) with and without capping agent. Nanoparticles of ZnS are prepared by a chemical precipitation method. The change in optical and morphological properties of ZnS nanoparticles is observed by using organic capping agent. Band gap measurements done by UV-Visible spectrophotometer and excitation spectra shows that band gap increases by introducing capping material. The phase structures and morphologies of the obtained composites were characterized by X-ray diffraction, scanning electron microscope and transmission electronic micrographs. Selected area electron diffraction (SAED) showed that the ZnS has a cubic spheralite structure. The FT-IR shows strong chemical bond between ZnS nanoparticles and host PVP polymer. Photoluminescence studies show that emission intensity increases for capped sample.
