Figure 2
(a) Photoluminescence spectra of CdSe (blue color), CdSe/ZnS (red color) and CdSe/ZnS-MAA (black color). The inset shows a luminescence image of Left: CdSe QDs and Right: band diagram of CdSe/ZnS QDs. (b) The PL spectra of MAA-QDs (black color) after conjugation with different dilutions of COx: 1:1 (red), 1:10 (blue), 1:100 (green), and 1:1000 dilution (pink) COx conjugated QDs. (c) (i) The fluorescence images of CdSe (left) and CdSe/ZnS (right); (ii) plot of variation in the integrated intensities as a function of dilution; and (iii) the energy band diagram of CdSe/ZnS heterostructure with possible optical transitions from VZn and VS.
