Exciton properties of selected aromatic hydrocarbon systems

Friedrich Roth (), Benjamin Mahns, Silke Hampel, Markus Nohr, Helmuth Berger, Bernd Büchner and Martin Knupfer

The European Physical Journal B: Condensed Matter and Complex Systems, 2013, vol. 86, issue 2, 1-5

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. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

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 (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1140/epjb/e2012-30592-1

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