Optical properties of silver-doped ZnS nanostructures

Silver (Ag)-doped and un-doped Zinc sulfide (ZnS) nanostructures (NSs) with different concentrations (ZnS: Ag 1%, 3%, 5%, 10%) were prepared by using the chemical method at room temperature. Doping of Ag into ZnS nanostructures modified its optical properties. The size and crystallinity of stabilized ZnS:Ag nanostructures are confirmed with SEM (Scanning electron microscopy) and XRD (X-ray diffraction). The formation of nanostructures is justified by UV-visible absorption spectra. The luminescence intensity of nanostructures has increased drastically at ZnS:Ag-10% and is characterized by a fluorescence spectrometer. The nonlinear optical properties are found by using the Z-scan setup and act as optical limiters. The nonlinear absorption coefficient (beta) and nonlinear refractive index (n(2)) are in the range of 10(-9) cm/W and 10(-14) cm(2)/W, respectively. The optical limiting threshold value is 0.11 J/cm(2). These nanostructures can be used as optical limiters.

Automated summary

Silver-doped and undoped zinc sulfide nanostructures with different concentrations were prepared using a chemical method at room temperature. The optical and nonlinear optical properties of the nanostructures were investigated.