Regensburg 2010 – scientific programme
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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 29.8: Poster
Wednesday, March 24, 2010, 15:00–17:30, Poster A
Trap-state influence on charge carrier transport in perylene based OTFTs — •Christian Effertz, Ingolf Segger, Philip Schulz, and Matthias Wuttig — Institute of Physics (IA), RWTH Aachen University of Technology, 52056 Aachen, Germany
Organic Thin-Film Transistors (OTFTs) have been intensively researched due to their adaptability, e.g. as an active matrix for flexible displays or in low-cost RFID (Radio-Frequence-Identification) tags. Recent reports indicate that OTFTs can match their inorganic counterparts based on hydrogenated amorphous silicon (a-Si:H) in terms of mobility and Ion/Ioff-ratio.
In order to gain a deeper insight in the yet not fully understood charge carrier transport in organic thin-film devices, we have produced and investigated perylene based bottom-gate top-contact OTFTs. Our measurements, including temperature dependent transfer characteristics, time-domain- and temperature-stimulated current, show a profound influence of trap-states on charge transport in organic electronic devices. For a more detailed study of the influence of trap-states on transistor characteristics, model calculations were carried out.