Influence of Nanosized Silicon Oxide on the Luminescent Properties of ZnO Nanoparticles

Figure 12

Normalized luminescence excitation spectra of the colloidal solutions of ZnO nanoparticles without SiO₂ (1) and with provisionally adding 0.2 g (2), 0.4 g (3), 0.6 g (4), 0.8 g (5), and 1 g of silica (6) to 10 mL of zinc oxide solution. [ZnO] = 2 × 10⁻² mol/L,  cm, and  nm.