Theory of Exciton Migration and Field-Induced Dissociation in Conjugated Polymers

Details Theory of Exciton Migration and Field-Induced Dissociation in Conjugated Polymers Theory of Exciton Migration and Field-Induced Dissociation in Conjugated Polymers

1996-07-08

arxiv.org/abs/cond-mat/9607054v1

Phys. Rev. Lett. 77, 4820 (1996)

Physics

Condensed Matter

4 pages, RevTeX, 2 Postscript figures

Scientific paper

10.1103/PhysRevLett.77.4820

The interplay of migration, recombination, and dissociation of excitons in disordered media is studied theoretically in the low temperature regime. An exact expression for the photoluminescence spectrum is obtained. The theory is applied to describe the electric field-induced photoluminescence-quenching experiments by Kersting et al. [Phys. Rev. Lett. 73, 1440 (1994)] and Deussen et al. [Synth. Met. 73, 123 (1995)] on conjugated polymer systems. Good agreement with experiment is obtained using an on-chain dissociation mechanism, which implies a separation of the electron-hole pair along the polymer chain.

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