| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1687990 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2006 | 6 Pages |
In the present study ZnS nanoparticles were prepared through chemical route. The particle size was calculated from the XRD line broadening. Pressed pellets of nanostructured ZnS were implanted with Cu+ ions at doses of 5 × 1014, 1 × 1015 and 5 × 1015 ions/cm2. The photoluminescence and Raman spectra of as prepared and Cu+ ion implanted samples were recorded. PL emission peaks were observed around 412 and 518 nm in as prepared and in samples with Cu+ ions implanted at higher doses of 1 × 1015 and 5 × 1015 ions/cm2. PL spectra of samples implanted at a low dose of 5 × 1014 ions/cm2 showed a peak around 490 nm instead of the peak at 518 nm. PL spectra of Cu+ implanted samples showed a decrease in intensity and an increase in FWHM of the emission peaks with increase in the implantation dose. The Raman spectra of unimplanted and Cu+ ion implanted samples of nanostructured ZnS showed LO mode and LOPC (L−) mode. The peak position of LOPC mode decreased with increase in implantation dose due to the passivation of free electrons by Cu+ ions.
