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Enhanced Radiative Emission Rate and Quantum Efficiency in Coupled Silicon Nanocrystal-Nanostructured Gold Emitters

Biteen, Julie S. and Pacifici, Domenico and Lewis, Nathan S. and Atwater, Harry A. (2005) Enhanced Radiative Emission Rate and Quantum Efficiency in Coupled Silicon Nanocrystal-Nanostructured Gold Emitters. Nano Letters, 5 (9). pp. 1768-1773. ISSN 1530-6984. https://resolver.caltech.edu/CaltechAUTHORS:20170802-090931005

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/nl051207zDOIArticle
http://pubs.acs.org/doi/abs/10.1021/nl051207zPublisherArticle
http://pubs.acs.org/doi/suppl/10.1021/nl051207zRelated ItemSupporting Information
ORCID:
AuthorORCID
Lewis, Nathan S.0000-0001-5245-0538
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2005 American Chemical Society. Received 25 June 2005. Published online 19 August 2005. Published in print 1 September 2005. This work was partially supported by NSF Grant CHE-0213589.
Funders:
Funding AgencyGrant Number
NSFCHE-0213589
Issue or Number:9
Record Number:CaltechAUTHORS:20170802-090931005
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170802-090931005
Official Citation:Enhanced Radiative Emission Rate and Quantum Efficiency in Coupled Silicon Nanocrystal-Nanostructured Gold Emitters Julie S. Biteen, Domenico Pacifici, Nathan S. Lewis, and Harry A. Atwater Nano Letters 2005 5 (9), 1768-1773 DOI: 10.1021/nl051207z
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:79743
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:02 Aug 2017 17:28
Last Modified:03 Oct 2019 18:23

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