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.
| Original language | English |
|---|---|
| Pages (from-to) | 1768-1773 |
| Number of pages | 6 |
| Journal | Nano letters |
| Volume | 5 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Sep 1 2005 |
ASJC Scopus subject areas
- Bioengineering
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering
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Biteen, J. S., Pacifici, D., Lewis, N. S., & Atwater, H. A. (2005). Enhanced radiative emission rate and quantum efficiency in coupled silicon nanocrystal-nanostructured gold emitters. Nano letters, 5(9), 1768-1773. https://doi.org/10.1021/nl051207z