Characterization and properties of ZnS nanoparticlesdoped with Ce, Mo and La

ZnS nanoparticles doped with transition metal (Ce, Mo and La) were synthesized by chemical precipitation and SILAR methods. The effect of various reaction conditions and additive concentrations on the formation, phase, morphology and optical properties of nanoparticles was investigated and discussed. XRD studies clearly demonstrated the formation of the ZnS nanoparticles zinc blende phase (cubic) and also confirmed that the transition metal atoms were included in the cage of the ZnS nanoparticle because there was no pollution peak of the cations. However, expansion of diffraction peaks with different molar concentrations of transition metal ions suggests the presence of ions on the ZnS nanoparticle surface. The average crystallite size changed as the doping concentration increased. The band spacing of the nanoparticles was calculated from the absorption spectra. Furthermore, UV-visible studies have shown that as the doping concentration increases, the band gap of the ZnS nanoparticles changes. Keywords: Chemical Precipitation, Doping, SILAR, Nanoparticle, ZnS,