Interaction of alkali metals with perylene-3,4,9,10-tetracarboxylic-dianhydride thin films studied by IR spectroscopy.
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.
Heimer
K
K
Department of Physics, University of Kaiserslautern, Erwin-Schrödinger-Strasse 56, 67663 Kaiserslautern, Germany.
Wuesten
J
J
Lach
S
S
Ziegler
Ch
Ch