Chirality dependence of the absorption cross-section of carbon nanotubes
| Autor: | Fabien Vialla, Philippe Roussignol, Emmanuelle Deleporte, Cyrielle Roquelet, Benjamin Langlois, Jean-Sébastien Lauret, Claude Delalande, Silvia Morim Santos, Christophe Voisin, Géraud Delport |
|---|---|
| Přispěvatelé: | Laboratoire Pierre Aigrain (LPA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Cachan (ENS Cachan)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Materials science
General Physics and Astronomy FOS: Physical sciences Nanotechnology 02 engineering and technology Carbon nanotube 010402 general chemistry 01 natural sciences Molecular physics law.invention Condensed Matter::Materials Science law Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Absorption (electromagnetic radiation) Spectroscopy Range (particle radiation) Condensed Matter - Mesoscale and Nanoscale Physics Absorption cross section Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology 0104 chemical sciences Photoexcitation Optical properties of carbon nanotubes [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other] 0210 nano-technology Chirality (chemistry) |
| Zdroj: | Physical Review Letters Physical Review Letters, American Physical Society, 2013, pp.137402 Physical Review Letters, 2013, 111, pp.137402 |
| ISSN: | 0031-9007 1079-7114 |
| Popis: | International audience; The variation of the optical absorption of carbon nanotubes with their geometry has been a long standing question at the heart of both metrological and applicative issues, in particular because optical spectroscopy is one of the primary tools for the assessment of the chiral species abundance of samples. Here, we tackle the chirality dependence of the optical absorption with an original method involving ultra-efficient energy transfer in porphyrin/nanotube compounds that allows uniform photo-excitation of all chiral species. We measure the absolute absorption cross-section of a wide range of semiconducting nanotubes at their S22 transition and show that it varies by up to a factor of 2.2 with the chiral angle, with type I nanotubes showing a larger absorption. In contrast, the luminescence quantum yield remains almost constant. |
| Databáze: | OpenAIRE |
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