736478.fig.004a
(a)
736478.fig.004b
(b)
Figure 4: (a) PL saturation curve for a sample with Si-NCs embedded in silica (blue circles) and with Si-NCs and Ag NPs (red squares), (b) lifetime PL for a set of emission wavelengths. The insets show a typical PL decay curve for sample A (upper left) and sample A(Ag) (lower right).