Regensburg 2010 – scientific programme
Parts | Days | Selection | Search | Downloads | Help
DS: Fachverband Dünne Schichten
DS 29: Poster: Molecular Spintronics, Biomolecular and Functional Organic Layers, Organic Electronics and Photovoltaics, Plasmonics and Nanophotonics, Organic Thin Films, Nanoengineered Thin Films, Thin Film Characterisation,
DS 29.10: Poster
Wednesday, March 24, 2010, 15:00–17:30, Poster A
Characterization of various Oligothiophenes for their suitability in organic field-effect transistors (OFETs) — •Vera Hoffmann1, Peter Milde1, Kinga Haubner2, Evelyn Jaehne3, Ulrich Zerweck1, and Lukas M. Eng1 — 1Department of Applied Photophysics, TU Dresden, Dresden, Germany — 2Leibnitz Institute for Solid State and Material Research Dresden, TU Dresden, Dresden, Germany — 3Institute of Macromolecular Chemistry and Textile Chemistry, TU Dresden, Dresden, Germany
Self-assembled molecular monolayers are inevitable for nano-scaled organic electronic devices [1, 2]. Non-contact atomic force microscopy (nc-AFM) in combination with Kelvin-probe force microscopy (KPFM) yields access to information about structural and electronic properties of such self-assembled monolayers [3].
In the present study, we investigate thiophene derivatives for their perspective use in organic field-effect transistors. Dihexylsexithiophene (DHST) monolayers are prepared by physical vapour deposition on TiO2 and SiO2 substrates having source/drain gold electrode structures. In situ high resolution KPFM and topography measurements of operating OFET devices are shown and discussed with respect to their future suitability.
[1] Smits et al., nature 455, 956 (2008)
[2] Haubner et al., phys. stat. solidi A 205, 430 (2008)
[3] Zerweck et al., Phys. Rev. B 71, 125424 (2005)