%0 Journal Article
%T Optical properties of carbon nanotubes in a composite material: The role of dielectric screening and thermal expansion
%+ Laboratoire Pierre Aigrain (LPA)
%+ Laboratoire de Photonique Quantique et Moléculaire (LPQM)
%A Berger, Sébastien
%A Iglésias, Florian
%A Bonnet, Pierre
%A Voisin, Christophe
%A Cassabois, Guillaume
%A Lauret, Jean‐sébastien
%A Delalande, Claude
%A Roussignol, Philippe
%< avec comité de lecture
%Z Optique Cohérente et Non Linéaire
%@ 0021-8979
%J Journal of Applied Physics
%I American Institute of Physics
%V 105
%P 094323
%8 2009
%D 2009
%Z Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]Journal articles
%X We report on environmental effects on the optical properties of single-wall carbon nanotubes in a gelatin-based composite material designed to foster their photoluminescence. We show that the dielectric screening of excitons due to the surrounding medium is responsible for a sizeable shift of the luminescence lines, which hardly depends on the tube geometry. In contrast, the temperature dependence from 4 to 300 K of the luminescence is clearly chirality dependent; the first and second excitonic lines shift in opposite directions with a magnitude that can be related quantitatively to a strain-induced modification of the electronic structure due to an expansivity mismatch between the nanotube and the matrix.
%G English
%2 https://hal.science/hal-00384084/document
%2 https://hal.science/hal-00384084/file/PLT-VoisinJAP.pdf
%L hal-00384084
%U https://hal.science/hal-00384084
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%~ CNRS
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%~ SORBONNE-UNIVERSITE
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