Charge-transfer excitons in strongly coupled organic semiconductors

Abstract : Time-resolved and temperature-dependent photoluminescence measurements on one-dimensional sexithiophene lattices reveal intrinsic branching of photoexcitations to two distinct species: self-trapped excitons and dark charge-transfer excitons (CTXs; ≳5% yield), with radii spanning 2–3 sites. The significant charge-transfer exciton (CTX) yield results from the strong charge-transfer character of the Frenkel exciton band due to the large free-exciton bandwidth (∼400 meV) in these supramolecular nanostructures.
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Physical Review B : Condensed matter and materials physics, American Physical Society, 2010, 81 (4), pp.041201. 〈10.1103/PhysRevB.81.041201〉
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http://hal.univ-reunion.fr/hal-01198470
Contributeur : Nicolas Alarcon <>
Soumis le : dimanche 13 septembre 2015 - 14:30:04
Dernière modification le : vendredi 14 septembre 2018 - 08:16:32

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Jean-François Glowe, Mathieu Perrin, David Beljonne, Sophia C. Hayes, Fabrice Gardebien, et al.. Charge-transfer excitons in strongly coupled organic semiconductors. Physical Review B : Condensed matter and materials physics, American Physical Society, 2010, 81 (4), pp.041201. 〈10.1103/PhysRevB.81.041201〉. 〈hal-01198470〉

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