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- Multi-excitonic effects in carbon nanotubes

Auteur(s): Colombier L., Rousseau E., Lauret Jean-sébastien, Voisin Christophe, Cassabois G.(Corresp.)

Conférence invité: GDRi Nanotubes Graphene Annual Meeting 2014 (Strasbourg, FR, 2014-09-23)


Résumé:

Single-walled carbon nanotubes are one-dimensional nanostructures where the Coulomb interactions between charge carriers are strongly enhanced compared to systems of higher dimensionality. This results in an electron-hole bound state -the so-called exciton- with a binding energy of the order of one third of the bandgap, which controls the SWNTs optical properties. I will review the importance of the exciton-exciton interactions in SWNTs in the light of the exciton recombination dynamics, the excitonic collision broadening, and the biexciton.