The synthesis and optical properties of core/shell and core/shell/shell nanocrystals based on CdTe nanocrystals are described. The influence of the different charge-carrier separation in the CdTe/CdS nanocrystals (type-I heterostructure) and the CdTe/CdSe nanocrystals (type-II heterostructure) is examined. The behavior of CdTe/CdS/CdSe nanocrystals (see image) in comparison to two core/shell systems is also studied.
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Dorfs et al. (2008) studied this question.
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