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TitleLong range energy transfer in graphene hybrid structures
Author(s)Gonçalves, Hugo
Bernardo, César
Moura, C.
Ferreira, R. A. S.
André, P. S.
Stauber, Tobias Pascal
Belsley, M.
Schellenberg, Peter Michael
Nonradiative energy transfer
Composite structures
Time correlated single photon counting
Issue date11-Jul-2016
PublisherIOP Publishing
JournalJournal of Physics D: Applied Physics
CitationGonçalves, H., Bernardo, C., Moura, C., Ferreira, R. A. S., Andre, P. S., Stauber, T., Belsley, M., Schellenberg, P. (2016). Long range energy transfer in graphene hybrid structures. Journal of Physics D-Applied Physics, 49(31). doi: 10.1088/0022-3727/49/31/315102
Abstract(s)In this work we quantify the distance dependence for the extraction of energy from excited chromophores by a single layer graphene flake over a large separation range. To this end hybrid structures were prepared, consisting of a thin (2 nm) layer of a polymer matrix doped with a well chosen strongly fluorescent organic molecule, followed by an un-doped spacer layer of well-defined thicknesses made of the same polymer material and an underlying single layer of pristine, undoped graphene. The coupling strength is assessed through the variation of the fluorescence decay kinetics as a function of distance between the graphene and the excited chromophore molecules. Non-radiative energy transfer to the graphene was observed at distances of up to 60 nm; a range much greater than typical energy transfer distances observed in molecular systems.
AccessRestricted access (UMinho)
Appears in Collections:CDF - FAMO - Artigos/Papers (with refereeing)

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