Regensburg 2013 – scientific programme
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DS: Fachverband Dünne Schichten
DS 32: Poster Session IV: Atomic layer deposition; Organic thin films; Organic Electronics and Phototovoltaics; Organic Materials for Spintronics - from spinterface to devices; Thin film photovoltaic materials and solar cells
DS 32.24: Poster
Thursday, March 14, 2013, 17:00–20:00, Poster B2
Vibrational properties of fluorinated rubrene in thin films — •Falk Anger1, Reinhard Scholz2, Alexander Gerlach1, and Frank Schreiber1 — 1Institut für Angewandte Physik, Auf der Morgenstelle 10, 72076 Tübingen — 2Institut für Angewandte Photophysik, TU Dresden, 01069 Dresden
One possibility of tuning the electronic properties of organic molecules is the substitution of hydrogen end groups by fluorine.
Vibrational spectroscopy can be used to obtain information about the conformation of the molecules as well as intermolecular coupling in thin films.
Rubrene (C42H28) has been shown to be a suitable semiconductor for applications, for which numerous experimental efforts have been made.
In this study, we present FT-IR and Raman spectra of thin films of partly (C42H14F14) and completely (C42F28) fluorinated rubrene.
We analyse the single component-films using DFT calculations and discuss different vibrational modes.
Finally, we analyse mixtures of Rubrene, C42H14F14, and C42F28 to investigate the effect of the molecular environment.
[1] F. Anger et al., submitted (2012)
[2] T. Breuer et al., J. Phys. Chem. C 116, 14491-14503 (2012)