Figure 9From: A study of photoluminescence properties and performance improvement of Cd-doped ZnO quantum dots prepared by the sol–gel methodFluorescence photographs of QDs under illumination by (a) an ordinary lamp and (b) UV light. (1) The ZnO QDs, (2) the 5% Cd-doped ZnO QDs, (3) the TOPO/ODA-modified Cd-doped ZnO QDs.Back to article page