Fig. 3. (a and b) Absorption (a) and PL (b) spectra of size-selected CAIS/ZnS QDs (the curve numbers correspond to the fraction numbers). PL was registered after normalization of the QD concentration to the same optical density (∼0.1) at the PL excitation wavelength. Insert in (a): curve 9 in the coordinates “ln(D) – quantum energy”; (c and d) photographs of size-selected CAIS/ZnS QD colloids taken under ambient (c) and UV (d) illumination (360–370 nm).