Role of intermolecular coupling in the photophysics of disordered organic semiconductors: Aggregate emission in regioregular polythiophene
Genre
Journal ArticleDate
2007-05-17Author
Clark, JSilva, C
Friend, RH
Spano, FC
Permanent link to this record
http://hdl.handle.net/20.500.12613/6099
Metadata
Show full item recordDOI
10.1103/PhysRevLett.98.206406Abstract
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. © 2007 The American Physical Society.Citation to related work
American Physical Society (APS)Has part
Physical Review LettersADA compliance
For Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.eduae974a485f413a2113503eed53cd6c53
http://dx.doi.org/10.34944/dspace/6081