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Etude optique de la dynamique des interactions électroniques dans des nanotubes de carbone

Abstract : This manuscript presents an experimental study of electronic properties of carbon nanotubes by photoluminescence spectroscopy techniques.
The protocol of preparation and characterisation of luminescent samples, where nanotubes are properly isolated from each other, is first described,. Embedded in a gel, they can resist to temperatures down to 10 K.
The first results concern stationnary photoluminescence spectroscopy. Performed on macroscopic ensembles of nanotubes, measurements lead to a precise determination of the chiralities and reveal several effects due to the coupling between nanotubes and their environment. To avoid inhomogeneity, luminescence spectroscopy is also conducted on a single carbon nanotube, revaling typical behaviour as narrow linewidth (1 meV at 10 K), spectral wandering and blinking at the second scale.
The other part of that study is dedicated to time-resolved photoluminescence spectroscopy. It reveals the recombination dynamics of the elementary excitations (excitons) in (9,4) and (10,2) chiralities. The temperature behaviour of the photoluminescence lifetime and intensity gives an insight on the structure and coupling of excitonic states in semiconducting carbon nanotubes.
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Contributor : Sébastien Berger <>
Submitted on : Tuesday, January 15, 2008 - 11:07:26 PM
Last modification on : Monday, December 14, 2020 - 9:41:12 AM
Long-term archiving on: : Tuesday, April 13, 2010 - 5:51:05 PM


  • HAL Id : tel-00204946, version 1


Sébastien Berger. Etude optique de la dynamique des interactions électroniques dans des nanotubes de carbone. Matière Condensée [cond-mat]. Université Pierre et Marie Curie - Paris VI, 2007. Français. ⟨tel-00204946⟩



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