Open AccessPhotoluminescence and Förster Resonance Energy Transfer in Elemental Bundles of Single-Walled Carbon Nanotubes
Author(s) -
J. Lefebvre,
Paul Finnie
Publication year - 2009
Publication title -
the journal of physical chemistry c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.401
H-Index - 289
eISSN - 1932-7455
pISSN - 1932-7447
DOI - 10.1021/jp810892z
Subject(s) - luminescence , photoluminescence , carbon nanotube , multiplicity (mathematics) , materials science , excitation , chirality (physics) , spectroscopy , photoluminescence excitation , molecular physics , energy transfer , resonance (particle physics) , acceptor , chemical physics , intersystem crossing , atomic physics , nanotechnology , optoelectronics , chemistry , condensed matter physics , physics , excited state , mathematical analysis , mathematics , chiral symmetry breaking , quantum mechanics , quark , nambu–jona lasinio model , singlet state
Single-walled carbon nanotubes (SWNTs) are commonly synthesized in bundles for which the luminescence is often quenched altogether. Here, we report on the simplest case of nanotube bundles: a single pair of individual air-suspended SWNTs. Using luminescence imaging spectroscopy, we find that emission and excitation spectra can be described within an energy transfer picture, with donor to acceptor transfer of excitation. The multiplicity of emission peaks in small bundles indicates that the transfer of luminescence is only partial at room temperature, with thermal occupation of the donor being significant. We attribute this signature to the unique band structure of SWNTs, with diameter and chirality dependent energy, recombination rate, and density of states.Peer reviewed: YesNRC publication: Ye
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