| Literature DB >> 16159221 |
Julie S Biteen1, Domenico Pacifici, Nathan S Lewis, Harry A Atwater.
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.Entities:
Year: 2005 PMID: 16159221 DOI: 10.1021/nl051207z
Source DB: PubMed Journal: Nano Lett ISSN: 1530-6984 Impact factor: 11.189