The role of intermolecular coupling in the photophysics of disordered organic semiconductors: Aggregate emission in regioregular polythiophene

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dc.creatorClark, Jenny
dc.creatorSilva, Carlos
dc.creatorFriend, Richard H.
dc.creatorSpano, Frank C.
dc.date2007-02-27
dc.date2007-05-17
dc.date.accessioned2026-07-07T08:01:54Z
dc.date.available2026-07-07T08:01:54Z
dc.descriptionWe address the role of excitonic coulping on the nature of photoexcitations in the conjugated polymer regioregular poly(3-hexylthiophene). By means of temperature-dependent absorption and photoluminescence spectroscopy, we show that optical emission is overwhelmingly dominated by weakly coupled H-aggregates. The relative absorbance of the 0-0 and 0-1 vibronic peaks provides a powerfully simple means to extract the magnitude of the intermolecular coupling energy, approximately 5 and 30 meV for films spun from isodurene and chloroform solutions respectively.
dc.description10 pages, 4 figures, published in Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/cond-mat/0702663
dc.identifierhttp://arxiv.org/abs/cond-mat/0702663
dc.identifierPhys. Rev. Lett. 98, 206406 (2007)
dc.identifierdoi:10.1103/PhysRevLett.98.206406
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/129064
dc.subjectMaterials Science
dc.subjectSoft Condensed Matter
dc.titleThe role of intermolecular coupling in the photophysics of disordered organic semiconductors: Aggregate emission in regioregular polythiophene
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