Abstract
Cadmium strontium sulfide nanostructures were synthesized by solid state diffusion method in the presence of sodium thiosulfate. XRD confirmed the presence of CdS and SrS structures in the synthesized samples. TEM micrographs revealed the formation of nearly spherical nanoparticles with grain size in the range 30–40 nm. The PL emission was centred around 532 nm with a shoulder at 468 nm. The PL emission of CdSrS shows a blue shift in comparison to that of CdS. Substantially enhanced photoluminescence emission was observed with the addition of Bi 3+ as a dopant. The effects of different excitation wavelengths on the PL spectra have also been investigated. It is suggested that the emission processes are linked to divalent Cd ions with broadening resulting due to these ions in being differing ion environments.
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