Surface Passivation and Photoluminescence of Mn-Doped ZnS Nanocrystals

Figure 2

Excitation and PL spectra of ZnS:Mn/ZnS core-shell NCs dispersed in a TGA solution (0.023 M, pH 9.0). Inset: PL intensity of ZnS:Mn/ZnS core-shell NCs at 580 nm and 430 nm against concentration of TGA with different pH. Initial excitation and emission spectra of ZnS:Mn/ZnS core-shell NCs in microemulsion are shown for comparison.