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Baibarac, M., Massuyeau, F., Wery, J., Baltog, I. & Lefrant, S. (2012) Raman scattering and anti-Stokes luminescence in poly-paraphenylene vinylene/carbon nanotubes composites. J. Appl. Phys. 111 083109. 
Added by: Laurent Cournède (2016-03-10 21:28:39)
Type de référence: Article
DOI: 10.1063/1.4705403
Numéro d'identification (ISBN etc.): 0021-8979
Clé BibTeX: Baibarac2012a
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Catégories: PMN
Mots-clés: absorption, conjugated polymers, excitation, generation, gold nanoparticles, photoluminescence, poly(p-phenylene vinylene), spectra, temperature
Créateurs: Baibarac, Baltog, Lefrant, Massuyeau, Wery
Collection: J. Appl. Phys.
Consultations : 8/438
Indice de consultation : 2%
Indice de popularité : 0.5%
Résumé     
In this paper, we present Raman scattering and luminescence of poly-paraphenylene vinylene/single-walled carbon nanotubes composites, focused on data recorded in the anti-Stokes branch. We demonstrate that, when the excitation energy is in the long wavelength tail of the fundamental absorption edge, an anti-Stokes signal is generated, whose origin is a photon absorption accompanied by a phonon process from lower to upper vibronic states. The efficiency of this anti-Stokes photo-luminescence is increased when composites films are deposited onto an Au rough surface acting as a surface enhanced Raman scattering substrate. This mechanism is explained by a coherent anti-Stokes Raman scattering-like process, as observed in other nano-structured materials. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4705403]
Added by: Laurent Cournède  
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