Figure 6
(a) Effects of Cu2+/S2− molar ratio on the fluorescence intensity of Cu2S QDs; (b) Effects of Cu2+/S2− molar ratio on the Cu2S QDs size and size distribution in solution. (c) and (d) TEM images of the Cu2S QDs synthesized with the molar ratio of Cu2+/S2− = 2:1 and 6:1.
