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Nano Lett. 2005 Sep;5(9):1768-73.

Enhanced radiative emission rate and quantum efficiency in coupled silicon nanocrystal-nanostructured gold emitters.

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1
California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA. jsbiteen@caltech.edu

Erratum in

  • Nano Lett. 2005 Oct;5(10):2116.

Abstract

We report local-field-enhanced light emission from silicon nanocrystals close to a film of nanoporous gold. We resolve photoluminescence as the gold-Si nanocrystal separation distance is varied between 0 and 20 nm and observe a fourfold luminescence intensity enhancement concomitant with increases in the coupled silicon nanocrystal/nanoporous gold absorbance cross section and radiative decay rate. A detailed analysis of the luminescence data indicated a local-field-enhanced quantum efficiency of 58% for the Si nanocrystals coupled to the nanoporous gold layer.

PMID:
16159221
DOI:
10.1021/nl051207z
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