Essential optical states in $π$-conjugated polymer thin films

Details Essential optical states in $π$-conjugated polymer thin films Essential optical states in $π$-conjugated polymer thin films

2007-12-07

arxiv.org/abs/0712.1065v1

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

We develop a theory of the electronic structure and photophysics of interacting chains of $\pi$-conjugated polymers to understand the differences between solutions and films. While photoexcitation generates only the exciton in solutions, the optical exciton as well as weakly allowed excimers are generated in films. Photoinduced absorption in films is primarily from the lowest excimer. We are also able to explain peculiarities associated with photoluminescence, including delayed photoluminescence and its quenching by electric field.

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