摘要：In this paper we report tuning of band gap of NiS nanoparticles by doping these with Cu. The pure and Cu doped NiS nanoparticles were prepared following chemical route. These nanoparticles were characterized by XRD, and UV-VIS spectroscopy. The XRD records show well-formed nanocrystalline particles. The particle size of NiS nanoparticles as determined using Scherrer formula is found to be about 43 nm. The particle size is found to decrease in Cu doped NiS nanoparticles. UV-VIS spectroscopy was used to determine the band gap of these nanoparticles. The band gap of NiS nanoparticles is found to be 3.63eV. The effect of doping Cu on the structural and optical properties of NiS nanoparticles is described.
