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  • Chen, Junsheng, et al. (author)
  • Surface plasmon inhibited photo-luminescence activation in CdSe/ZnS core-shell quantum dots
  • 2016
  • In: Journal of Physics: Condensed Matter. - : IOP Publishing. - 0953-8984 .- 1361-648X. ; 28:25
  • Journal article (peer-reviewed)abstract
    • In 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.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Abdellah, Mohamed (1)
Žídek, Karel (1)
Zheng, Kaibo (1)
Pullerits, Tõnu (1)
Chen, Junsheng (1)
Al-Marri, Mohammed J ... (1)
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Lund University (1)
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English (1)
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Engineering and Technology (1)
Year
2016 (1)

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