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AuthorChen, Junsheng
AuthorZidek, Karel
AuthorAbdellah, Mohamed
AuthorAl-Marri, Mohammed J
AuthorZheng, Kaibo
AuthorPullerits, TOnu
Available date2021-09-01T10:03:35Z
Publication Date2016
Publication NameJournal of Physics Condensed Matter
ResourceScopus
URIhttp://dx.doi.org/10.1088/0953-8984/28/25/254001
URIhttp://hdl.handle.net/10576/22518
AbstractIn a composite film of Cdx Sey Zn1-x S1-y gradient core-shell quantum dots (QDs) and gold nanorods (NRs), the optical properties of the QDs are drastically affected by the plasmonic nanoparticles. We provide a careful study of the two-step formation of the film and its morphology. Subsequently we focus on QD luminescence photoactivation - a process induced by photochemical changes on the QD surface. We observe that even a sparse coverage of AuNRs can completely inhibit the photoactivation of the QDs' emission in the film. We demonstrate that the inhibition can be accounted for by a rapid energy transfer between QDs and AuNRs. Finally, we propose that the behavior of emission photoactivation can be used as a signature to distinguish between energy and electron transfer in the QD-based materials. 2016 IOP Publishing Ltd.
SponsorThis paper was made possible by NPRP grant # NPRP7-227-1-034 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors. The work in Lund was funded by the Swedish Research Council and KAW foundation. Collaboration within NanoLund is acknowledged.
Languageen
PublisherInstitute of Physics Publishing
SubjectCadmium compounds
Energy transfer
II-VI semiconductors
Luminescence
Nanocomposite films
Nanocrystals
Nanorods
Optical properties
Plasmonics
Shells (structures)
Surface plasmons
CdSe/ZnS
Core-shell quantum dots
Electron transfer
Gold nanorod
Photo activations
Plasmonic nanoparticle
Step formation
Semiconductor quantum dots
TitleSurface plasmon inhibited photo-luminescence activation in CdSe/ZnS core-shell quantum dots
TypeArticle
Issue Number25
Volume Number28
dc.accessType Abstract Only


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