Figure 1
From: Microwave-assisted synthesis of water-dispersed CdTe/CdSe core/shell type II quantum dots
Band structure alignment. (a) Alignment of the conduction and valence band edges for CdTe/CdSe core/shell type II heterostructures. (b) XRD patterns of CdTe and CdTe/CdSe core/shell QDs via microwave-assisted synthesis. The black bars at the bottom represent the XRD pattern of bulk CdTe (cubic). The black bars at the top represent the XRD pattern of bulk CdSe (cubic). (c) TEM bright field image of the CdTe core QDs in low magnification, the inset for the HRTEM image of CdTe QD with cubic structure. (d) HRTEM image of CdTe/CdSe core/shell QD, different contrasts corresponding to the CdTe core and CdSe shell, respectively. The thickness of the shell is about four to five atomic layers.