High-efficiency silicon nanocrystal light-emitting devices

Kai Yuan Cheng, Rebecca Anthony, Uwe R. Kortshagen, Russell J. Holmes

Research output: Contribution to journalArticlepeer-review

273 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)1952-1956
Number of pages5
JournalNano letters
Volume11
Issue number5
DOIs
StatePublished - May 11 2011

Keywords

  • Silicon nanocrystal
  • electroluminescence
  • hybrid nanocrystal-OLEDs

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