Surface Passivation and Photoluminescence of Mn-Doped ZnS Nanocrystals
Figure 3
(a) Photographs of
ZnS:Mn/ZnS core-shell NCs dispersed in water (1) and a TGA solution (2) upon
366 nm UV (left) and day light (right) illumination. (b) Excitation and PL spectra
of ZnS:Mn/ZnS core-shell NCs dispersed in a TGA solution (0.035 M, pH 8.5). Inset: PL intensity of
ZnS:Mn/ZnS core-shell NCs at 580 nm and 430 nm against pH of TGA solutions
(0.035 M). Excitation and emission
spectra of ZnS:Mn/ZnS core-shell NCs dispersed in an aqueous solution with same
NCs concentration are shown for comparison.
