Probing the hot spot properties of semicontinuous gold films through the fluorescence polarization of CdSe/CdS colloidal nanocrystals

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TitreProbing the hot spot properties of semicontinuous gold films through the fluorescence polarization of CdSe/CdS colloidal nanocrystals
Type de publicationJournal Article
Year of Publication2017
AuteursUng TPhuong Lie, Quelin X, Berini B, Francs GColas des, Nasilowski M, Dubertret B, Hermier J-P, Buil S
JournalJOURNAL OF NANOPHOTONICS
Volume11
Pagination046005
Date PublishedOCT
Type of ArticleArticle
ISSN1934-2608
Mots-cléscolloidal nanocrystals, plasmonics, Polarization, semicontinuous film
Résumé

The coupling between thick-shell CdSe/CdS colloidal nanocrystals with the hot spots of a semicontinuous gold film is characterized by measuring simultaneously the photoluminescence decay rate and the linear polarization ratio. The absence of correlations between the two quantities is demonstrated. In contrast with the results obtained with continuous gold films, polarization ratios higher than 80% are achieved for the smallest nanocrystals. This ratio decreases quickly when the nanocrystals size is increased. (C) The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License.
DOI10.1117/1.JNP.11.046005