We synthesized CdSe/CdS/ZnS core/multi-shell nanocrystals through a single coating step by using different growth rates of CdS and ZnS crystalline layers on CdSe cores. The resulting nanocrystals exhibited a controlled redshift from the initial photoluminescent (PL) emission of CdSe cores with much improved quantum yield (QY above 70%).
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Jun et al. (2006) studied this question.
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