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. Author manuscript; available in PMC: 2009 Jul 16.
Published in final edited form as: Nat Nanotechnol. 2008 Dec 7;4(1):56–63. doi: 10.1038/nnano.2008.360

Figure 3. Comparison of emission wavelengths and fluorescence quantum yields for CdTe cores coated with different shell materials and thicknesses.

Figure 3

(A) Emission wavelengths of 3.8 nm CdTe cores capped with ZnSe, CdSe, or ZnTe, or one monolayer of ZnTe followed by ZnSe (ZnTe/ZnSe), or one monolayer of CdSe followed by ZnSe (CdSe/ZnSe). (B) Fluorescence quantum yields of 3.8 nm CdTe cores capped with either ZnSe or CdSe, and CdSe QDs (3.8 nm) capped with ZnS for different shell thicknesses. (C) Diagrams of band offsets for core/shell nanocrystals in (A), as calculated by using the model-solid theory and a continuum elasticity model for the impact of strain (see Methods).