title: Interaction of alkali metals with perylene-3,4,9,10-tetracarboxylic-dianhydride thin films studied by IR spectroscopy.
abstract: In order to clarify the doping behavior of different alkali metals in perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA), Fourier transform infrared spectra of PTCDA thin films doped with sodium, potassium, and cesium were measured and compared. Furthermore the vibrational properties were calculated using density-functional theory and these calculated vibrational frequencies were assigned to the experimental IR modes of the thin films.
authors.affiliation: Department of Physics, University of Kaiserslautern, Erwin-Schrödinger-Strasse 56, 67663 Kaiserslautern, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Heimer
authors.forename: J
authors.initials: J
authors.lastname: Wuesten
authors.forename: S
authors.initials: S
authors.lastname: Lach
authors.forename: Ch
authors.initials: Ch
authors.lastname: Ziegler