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Plasmon-Enhanced Photoluminescence of Silicon Quantum Dots: Simulation and Experiment

Biteen, Julie S. and Sweatlock, Luke A. and Mertens, Hans and Lewis, Nathan S. and Polman, Albert and Atwater, Harry A. (2007) Plasmon-Enhanced Photoluminescence of Silicon Quantum Dots: Simulation and Experiment. Journal of Physical Chemistry C, 111 (36). pp. 13372-13377. ISSN 1932-7447. https://resolver.caltech.edu/CaltechAUTHORS:20170614-092803765

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Abstract

The enhancement of photoluminescence emission from silicon quantum dots in the near field of cylindrical silver particles has been calculated using finite integration techniques. This computational method permitted a quantitative examination of the plasmon resonance frequencies and locally enhanced fields surrounding coupled arrays of silver particles having arbitrary shapes and finite sizes. We have studied Ag nanoparticles with diameters in the 50−300 nanometer range and array pitches in the range of 50−800 nm, near a plane of optical emitters spaced 10−40 nm from the arrays. The calculated and experimental plasmon resonance frequencies and luminescence enhancements are in good agreement. In the tens-of-nanometers size regime, for the geometries under investigation, two competing factors affect the photoluminescence enhancement; on one hand, larger field enhancements, which produce greater emission enhancements, exist around smaller silver particles. However, as the spacing of such particles is decreased to attain higher surface coverages, the interparticle coupling draws the enhanced field into the lateral gaps between particles and away from the emitters, leading to a decrease in the plasmonic emission enhancement. The computations have thus revealed the limitations of using arbitrarily dense arrays of plasmonic metal particles to enhance the emission from coplanar arrays of dipole-like emitters. For such a geometry, a maximum sixfold net emission enhancement is predicted for the situation in which the plasmonic layer is composed of 50 nm diameter Ag particles in an array having a 300 nm pitch.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/jp074160+DOIArticle
http://pubs.acs.org/doi/abs/10.1021/jp074160%2BPublisherArticle
ORCID:
AuthorORCID
Lewis, Nathan S.0000-0001-5245-0538
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2007 American Chemical Society. Received 30 May 2007. Published online 17 August 2007. Published in print 1 September 2007. This work was partially supported by NSF Grant No. CHE-0604894 and by AFOSR MURI Award No. FA9550-04-1-0434. Work at AMOLF is part of the research program of FOM, supported by NWO and NANONED, a nanotechnology program of the Dutch Ministry of Economic Affairs. Metal nanoparticle arrays were fabricated and analyzed using the facilities of the Amsterdam nanoCenter.
Funders:
Funding AgencyGrant Number
NSFCHE-0604894
Air Force Office of Scientific Research (AFOSR) (MURI)FA9550-04-1-0434
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
Ministry of Economic Affairs (Netherlands)UNSPECIFIED
Issue or Number:36
Record Number:CaltechAUTHORS:20170614-092803765
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170614-092803765
Official Citation:Plasmon-Enhanced Photoluminescence of Silicon Quantum Dots:  Simulation and Experiment Julie S. Biteen, Luke A. Sweatlock, Hans Mertens, Nathan S. Lewis, Albert Polman, and Harry A. Atwater The Journal of Physical Chemistry C 2007 111 (36), 13372-13377 DOI: 10.1021/jp074160+
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:78199
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:14 Jun 2017 16:38
Last Modified:03 Oct 2019 18:06

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