Aqueous Synthesis of ZnSe/ZnS-2-R-Benzothiazole Nanocrystals with White Emission

Figure 5

Typical temporal evolution of the absorption (a) and corresponding emission (b) spectra of ZnSe and ZnSe/ZnS NCs. Curve a represents the absorption (a) and corresponding emission (b) spectra of ZnSe NCs. Curves b~g represent the absorption (a) and corresponding emission (b) spectra of ZnSe/ZnS NCs obtained for heating for 1, 9, 20, 25, 35, and 40 h, respectively; the excitation wavelength was 360 nm.

(a)

(b)