Figure 2.

Morphology and atomic constituent spatial distribution of the ZnO/CdSe core/shell nanostructures. (a) Bright field STEM image of the ZnO/CdSe core/shell nanoneedle. (b) EDX spectra of the CdSe shell layer as indicated by point 1 in (a). (c) EDX nanoprobe line scan of the elements Zn, Cd, and Se across the ZnO/CdSe core/shell nanoneedle as indicated by line 2 in (a).