Send to

Choose Destination
See comment in PubMed Commons below
J Am Chem Soc. 2005 Aug 10;127(31):10889-97.

Coupled and decoupled dual quantum systems in one semiconductor nanocrystal.

Author information

  • 1Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, USA.


Dual quantum systems, 0-dimensional quantum dot, and 2-dimensional quantum wells were constructed in one II-VI semiconductor nanocrystal by the epitaxial growth of a barrier (ZnS) layer between the systems in solution. By alteration of the thickness of the barrier layer, the two quantum systems were controlled to either electronically coupled or decoupled. Evidence of optical coupling between the two band gap emissions was also observed. The position and relative intensity of the two emissions can be independently tuned by reaction conditions. Total photoluminescence quantum efficiency of the dual emitting bands reached as high as 30% at room temperature under synthetic conditions not optimized for high emission.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Chemical Society
    Loading ...
    Support Center