Effect Of Ni Concentration on Structural and Optical Properties of ZnS Nanoparticles

Ni (1, 5 mol %) doped ZnS nano particles are synthesized by chemical Co-Precipitation method. The prepared samples are characterized byXRD, Raman Spectroscopy, Photo luminescence (PL), Optical absorption, Diffused reflectance (DRS) and Scanning electron microscope (SEM). XRD Analysis confirms the Cubic blended Structure for Ni doped ZnS and no impurity peaks are presented in XRD pattern. The average particle sizes of Ni doped nanoparticles are in the range of 2-3 nm. Raman spectra show the Vibrational modes that represent the structure of ZnS. The PL spectra exhibit emission peaks in both UV and visible regions and these results are good agreement with the absorption spectra and DRS. The optical band gap of ZnS decrease with increase of Ni concentration. SEM micro graphs reveal that the surface morphology of Ni doped ZnS nanoparticles are spherical in shape.