Optical Properties of Fe^2+ Ion Doped ZnS Nanoparticles Synthesized Using co-Precipitation Method

Nanoparticles of zn1-xfexs (x = 0.0, 0.1, 0.2 and 0.3) were prepared by chemical co-precipitation method from homogenous solution of zinc and ferum salt at room temperature with controlled parameter. these nanoparticles were sterically stabilized using sodium hexamethaphospate (shmp). here, a study of the effect of fe doping on structure and optical properties of nanoparticles was undertaken. structure, elemental analysis and optical properties have been investigated by x-ray diffraction (xrd), transmission electron microscopy (tem), fourier-transform-infrared spectroscopy (ft-ir), x-ray fluorescence (xrf), uv-visible spectroscopy and photoluminescence (pl) spectrophotometer. ft-ir and xrf results confirmed the incorporation of ion dopants into zns crystal structure, and xrd results showed that zn1-xfexs (x = 0.00 and 0.10) nanoparticles crystallized in a zinc blende structure without any impurity. the particle size of all of samples ranged from 2 nm to 3 nm, as calculated by the debye-scherrer formula. the optical absorption spectra indicate a blue shift of the absorption edge with increasing fe-content. the luminescence of nanoparticles excite at about 370 nm with an emission peak at around at 452 nm, 490 nm and 550 nm.