Exciton properties of selected aromatic hydrocarbon systems

  • Friedrich Roth
  • Benjamin Mahns
  • Silke Hampel
  • Markus Nohr
  • Helmuth Berger
  • Bernd Büchner
  • Martin Knupfer
Regular Article

DOI: 10.1140/epjb/e2012-30592-1

Cite this article as:
Roth, F., Mahns, B., Hampel, S. et al. Eur. Phys. J. B (2013) 86: 66. doi:10.1140/epjb/e2012-30592-1
Part of the following topical collections:
  1. Topical issue: Excitonic Processes in Condensed Matter, Nanostructured and Molecular Materials

Abstract

We have examined the singlet excitons in two representatives of acene-type (tetracene and pentacene) and phenacene-type (chrysene and picene) molecular crystals, respectively, using electron energy-loss spectroscopy at low temperatures. We show that the excitation spectra of the two hydrocarbon families significantly differ. Moreover, close inspection of the data indicates that there is an increasing importance of charge-transfer excitons at lowest excitation energy with increasing length of the molecules.

Keywords

Topical issue: Excitonic Processes in Condensed Matter, Nanostructured and Molecular Materials. Guest editors: Maria Antonietta Loi, Jasper Knoester and Paul H. M. van Loosdrecht 

Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Friedrich Roth
    • 1
  • Benjamin Mahns
    • 1
  • Silke Hampel
    • 1
  • Markus Nohr
    • 1
  • Helmuth Berger
    • 2
  • Bernd Büchner
    • 1
    • 3
  • Martin Knupfer
    • 1
  1. 1.IFW DresdenDresdenGermany
  2. 2.Institute of Physics of Complex Matter, Ecole Polytechnique Federale de Lausanne (EPFL)LausanneSwitzerland
  3. 3.Institut für Festkörperphysik, Technische Universität DresdenDresdenGermany

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