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arXiv · 1205.4819

Momentum dependence of the excitons in pentacene

Friedrich Roth·Roman Schuster·Andreas König·Martin Knupfer·Helmuth Berger
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Abstract

We have carried out electron energy-loss investigations of the lowest singlet excitons in pentacene at 20 K. Our studies allow to determine the full exciton band structure in the a*,b* reciprocal lattice plane. The lowest singlet exciton can move coherently within this plane, and the resulting exciton dispersion is highly anisotropic. The analysis of the energetically following (satellite) features indicates a strong admixture of charge transfer excitations to the exciton wave function.

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Friedrich Roth, Roman Schuster, Andreas König, Martin Knupfer, Helmuth Berger. 2012-05-22. Momentum dependence of the excitons in pentacene. https://doi.org/10.1063/1.4723812

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