title: Long-lived charged states in single-walled carbon nanotubes.
abstract: We present continuous wave photoinduced absorption spectroscopy of single-walled carbon nanotubes dispersed in a polymer matrix. The spectrum is dominated by a modulation of the absorption line shape, predominantly of large diameter tubes, that we assigned to electroabsorption caused by local electric fields arising from trapped photoinduced charges. The lack of selectivity in the excitation points to an efficient migration of the photoexcited states, either the singlet excitons or the charges resulting from their dissociation.
authors.affiliation: ULTRAS-INFM, Dipartimento di Fisica, Politecnico di Milano, P.za L. da Vinci 32, 20133 Milan, Italy. christoph.gedermaier@fisi.polimi.it
authors.forename: Christoph
authors.initials: C
authors.lastname: Gadermaier
authors.forename: Enzo
authors.initials: E
authors.lastname: Menna
authors.forename: Moreno
authors.initials: M
authors.lastname: Meneghetti
authors.forename: W Joshua
authors.initials: WJ
authors.lastname: Kennedy
authors.forename: Z Valy
authors.initials: ZV
authors.lastname: Vardeny
authors.forename: Guglielmo
authors.initials: G
authors.lastname: Lanzani
mesh_terms: D000042:Absorption; D004560:Electricity; D008027:Light; D008567:Membranes, Artificial; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000528:radiation effects; D011092:Polyethylene Glycols / Q000737:chemistry*
chemical_list: D008567:Membranes, Artificial; D037742:Nanotubes, Carbon; D011092:Polyethylene Glycols