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Core–shell–shell quantum dots (QDs) of CdTe/CdS/ZnS having an average diameter of 4.2 nm and exhibiting type-II behaviors have been facilely synthesized in water via a one-pot technique. Water-dispersible CdTe/CdS/ZnS QDs have been prepared simply by injecting Zn2+(aq) into an aqueous colloidal solution of CdTe/CdS core–shell QDs having an average diameter of 3.8 nm, which were already synthesized...
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