Abstract

The overcoating of CdS:Mn nanocrystals by a thin shell of non-doped CdS or ZnS results in remarkably improved photoluminescence properties. The CdS:Mn/CdS and CdS:Mn/ZnS nanocrystals presented in this work (see figure) show a much more efficient Mn-related photoluminescence than the non-coated nanocrystals. These nanocrystals are expected to find applications in flat-panel displays, high-density optical data storage materials, and fluorescence labels for biological imaging.

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