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The effect of Cr doping on dielectric and optical properties of ZnS nanoparticles was systematically investigated at room temperature. Structural analysis confirmed that dopant occupy the regular lattice and interstitial sites in host lattice. Experimental data revealed exceptionally large, low frequency dielectric constant (ϵ′≈106) and enhanced photoluminescence emission in Cr doped ZnS nanoparticles...
Pure and lead doped ZnS nanoparticles have been successfully synthesized by chemical precipitation method. Structural analysis using X-ray diffraction confirms the cubic phase of ZnS and formation of an additional cubic phase of lead sulphide in lead doped ZnS nanoparticles. Increase in the band gap of the doped nanoparticles is consistent with the reduction of crystallite size which lies in the quantum...
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