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Nano Lett. 2011 May 11;11(5):1952-6. doi: 10.1021/nl2001692. Epub 2011 Apr 4.

High-efficiency silicon nanocrystal light-emitting devices.

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  • 1Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States.

Abstract

We demonstrate highly efficient electroluminescence from silicon nanocrystals (SiNCs). In an optimized nanocrystal-organic light-emitting device, peak external quantum efficiencies of up to 8.6% can be realized with emission originating solely from the SiNCs. The high efficiencies reported here demonstrate for the first time that with an appropriate choice of device architecture it is possible to achieve highly efficient electroluminescence from nanocrystals of an indirect band gap semiconductor.

PMID:
21462935
[PubMed]
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