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Article: Highly efficient fluorescence of a fluorescing nanoparticle with a silver shell

TitleHighly efficient fluorescence of a fluorescing nanoparticle with a silver shell
Authors
Issue Date2007
PublisherOptical Society of America. The Journal's web site is located at http://www.opticsexpress.org
Citation
Optics Express, 2007, v. 15 n. 11, p. 7083-7094 How to Cite?
AbstractSpontaneous emission (SE) rate and the fluorescence efficiency of a bare fluorescing nanoparticle and the nanoparticle with a silver nanoshell are analyzed rigorously by using a classical electromagnetic approach with the consideration of the nonlocal effect of the silver nanoshell. The dependences of the SE rate and the fluorescence efficiency on the core-shell structure are carefully studied and the physical interpretations of the results are addressed. The results show that the SE rate of a bare nanoparticle is much slower than that in the infinite medium by almost an order of magnitude and consequently the fluorescence efficiency is usually low. However, by encapsulating the nanoparticle with a silver shell, highly efficient fluorescence can be achieved as a result of a large Purcell enhancement and high out-coupling efficiency for a well-designed core-shell structure. We also show that a higher SE rate may not offer a larger fluorescence efficiency since the fluorescence efficiency not only depends on the internal quantum yield but also the out-coupling efficiency. © 2007 Optical Society of America.
Persistent Identifierhttp://hdl.handle.net/10722/155374
ISSN
2015 Impact Factor: 3.148
2015 SCImago Journal Rankings: 2.186
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChen, XWen_US
dc.contributor.authorChoy, WCHen_US
dc.contributor.authorHe, Sen_US
dc.contributor.authorChui, PCen_US
dc.date.accessioned2012-08-08T08:33:08Z-
dc.date.available2012-08-08T08:33:08Z-
dc.date.issued2007en_US
dc.identifier.citationOptics Express, 2007, v. 15 n. 11, p. 7083-7094en_US
dc.identifier.issn1094-4087en_US
dc.identifier.urihttp://hdl.handle.net/10722/155374-
dc.description.abstractSpontaneous emission (SE) rate and the fluorescence efficiency of a bare fluorescing nanoparticle and the nanoparticle with a silver nanoshell are analyzed rigorously by using a classical electromagnetic approach with the consideration of the nonlocal effect of the silver nanoshell. The dependences of the SE rate and the fluorescence efficiency on the core-shell structure are carefully studied and the physical interpretations of the results are addressed. The results show that the SE rate of a bare nanoparticle is much slower than that in the infinite medium by almost an order of magnitude and consequently the fluorescence efficiency is usually low. However, by encapsulating the nanoparticle with a silver shell, highly efficient fluorescence can be achieved as a result of a large Purcell enhancement and high out-coupling efficiency for a well-designed core-shell structure. We also show that a higher SE rate may not offer a larger fluorescence efficiency since the fluorescence efficiency not only depends on the internal quantum yield but also the out-coupling efficiency. © 2007 Optical Society of America.en_US
dc.languageengen_US
dc.publisherOptical Society of America. The Journal's web site is located at http://www.opticsexpress.orgen_US
dc.relation.ispartofOptics Expressen_US
dc.rightsThis paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-15-11-7083. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.-
dc.rightsOptics Express. Copyright © Optical Society of America-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleHighly efficient fluorescence of a fluorescing nanoparticle with a silver shellen_US
dc.typeArticleen_US
dc.identifier.emailChoy, WCH:chchoy@eee.hku.hken_US
dc.identifier.emailChui, PC:pcchui@eee.hku.hken_US
dc.identifier.authorityChoy, WCH=rp00218en_US
dc.identifier.authorityChui, PC=rp00114en_US
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1364/OE.15.007083en_US
dc.identifier.pmid19547026-
dc.identifier.scopuseid_2-s2.0-34249740762en_US
dc.identifier.hkuros147780-
dc.identifier.hkuros131016-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34249740762&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume15en_US
dc.identifier.issue11en_US
dc.identifier.spage7083en_US
dc.identifier.epage7094en_US
dc.identifier.isiWOS:000247240300065-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridChen, XW=10139115100en_US
dc.identifier.scopusauthoridChoy, WCH=7006202371en_US
dc.identifier.scopusauthoridHe, S=36048024500en_US
dc.identifier.scopusauthoridChui, PC=13309913400en_US

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