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Evidence for phase formation in potassium intercalated 1,2;8,9-dibenzopentacene

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Abstract

We have prepared potassium intercalated 1,2;8,9-dibenzopentacene films under vacuum conditions. The evolution of the electronic excitation spectra upon potassium addition as measured using electron energy-loss spectroscopy clearly indicate the formation of particular doped phases with compositions K x dibenzopentacene (x = 1, 2, 3). Moreover, the stability of these phases as a function of temperature has been explored. Finally, the electronic excitation spectra also give insight into the electronic ground state of the potassium doped 1,2;8,9-dibenzopentacene films.

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Authors and Affiliations

  1. IFW Dresden, P.O. Box 270116, 01171, Dresden, Germany

    F. Roth, A. König, B. Mahns, B. Büchner & M. Knupfer

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  1. F. Roth
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  2. A. König
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  3. B. Mahns
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  4. B. Büchner
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  5. M. Knupfer
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Correspondence to F. Roth.

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Roth, F., König, A., Mahns, B. et al. Evidence for phase formation in potassium intercalated 1,2;8,9-dibenzopentacene. Eur. Phys. J. B 85, 242 (2012). https://doi.org/10.1140/epjb/e2012-30247-3

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  • DOI: https://doi.org/10.1140/epjb/e2012-30247-3

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