Title: Exciton Delocalization and Superradiance in Tetracene Thin Films and Nanoaggregates
Abstract:The structure and dynamics of luminescent excitons in tetracene thin films and nanoaggregates are investigated using time-resolved spectroscopy and theoretical calculations. The orientation of tetrace...The structure and dynamics of luminescent excitons in tetracene thin films and nanoaggregates are investigated using time-resolved spectroscopy and theoretical calculations. The orientation of tetracene's transition dipole moment along its short molecular axis leads to properties qualitatively different from those observed in aggregates of phenylene-vinylene and thiophene oligomers, despite similar crystal structures. The spectral shape, temperature dependence, and radiative lifetime are consistent with a short-lived superradiant exciton delocalized over $\ensuremath{\sim}10$ tetracene molecules.Read More
Publication Year: 2004
Publication Date: 2004-03-12
Language: en
Type: article
Indexed In: ['crossref', 'pubmed']
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Cited By Count: 259
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