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 2005 |
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ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Chemistry (miscellaneous)
Cite this
Enhanced radiative emission rate and quantum efficiency in coupled silicon nanocrystal-nanostructured gold emitters. / Biteen, Julie S.; Pacifici, Domenico; Lewis, Nathan S; Atwater, Harry A.
In: Nano Letters, Vol. 5, No. 9, 09.2005, p. 1768-1773.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enhanced radiative emission rate and quantum efficiency in coupled silicon nanocrystal-nanostructured gold emitters
AU - Biteen, Julie S.
AU - Pacifici, Domenico
AU - Lewis, Nathan S
AU - Atwater, Harry A.
PY - 2005/9
Y1 - 2005/9
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=25844528046&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=25844528046&partnerID=8YFLogxK
U2 - 10.1021/nl051207z
DO - 10.1021/nl051207z
M3 - Article
VL - 5
SP - 1768
EP - 1773
JO - Nano Letters
JF - Nano Letters
SN - 1530-6984
IS - 9
ER -