Regensburg 2007 – scientific programme

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MA: Fachverband Magnetismus

MA 5: Invited Talks Pätzold / Gruner

MA 5.1: Invited Talk

Monday, March 26, 2007, 14:00–14:30, H10

Novel magnetoresistive effect in organic semiconductors — •Ralph Paetzold, Manfred Ruehrig, and Joachim Wecker — Siemens AG, CT MM1, Guenther-Scharowsky-Strasse 1, 91058 Erlangen, Germany

Besides the more classical organic applications like organic PV and organic LEDs organic semiconductors have also been demonstrated to show a significant magnetoresitive effect. In 2004 the first article on the so called OMR (organic magnetoresistive effect) was published by T. Francis et al [1]. Devices that show significant OMR effect are quite similar to standard OLEDs in terms of materials and device architecture. The effect itself can vary with materials and the device architecture used. In this contribution we will give an overview about the general effect and discuss some possible causes. Experimental results will be introduced in order to evaluate the different mechanisms.