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Role of Intermolecular Coupling in the Photophysics of Disordered Organic Semiconductors: Aggregate Emission in Regioregular Polythiophene

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Clark, Jenny, Silva, Carlos, Friend, Richard H., Spano, Frank C.·2007·Physical Review Letters

Abstract

We address the role of excitonic coupling 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, of approximately 5 and 30 meV for films spun from isodurene and chloroform solutions, respectively.

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Metadata

Authors
Clark, J., Silva, C., Friend, R. H., & Spano, F. C.
Venue
Physical Review Letters
Published
2007-05-17
Volume
98
Issue
20
Pages
206406-206406
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W1972333973
Cited by
962
References
0
FWCI
27.72
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Role of Intermolecular Coupling in the Photophysics of Disordered Organic Semiconductors: Aggregate Emission in Regioregular Polythiophene. https://app.cochat.ai/papers/10.1103/physrevlett.98.206406
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Clark, J., Silva, C., Friend, R. H., & Spano, F. C. (2007). Role of Intermolecular Coupling in the Photophysics of Disordered Organic Semiconductors: Aggregate Emission in Regioregular Polythiophene. Physical Review Letters. https://doi.org/10.1103/physrevlett.98.206406

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