Dresden 2006 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 19: SYMPOSIUM Functional Organic Thin Films I
CPP 19.8: Vortrag
Donnerstag, 30. März 2006, 12:00–12:15, ZEU Lich
Large area polymer OLEDs for lighting — •Christoph Gärditz1,2, Dirk Buchhauser1,3, Ralph Pätzold1, Oliver Weiss1,4, Joachim Wecker1, and Albrecht Winnacker2 — 1Siemens AG, CT MM 1, Günther-Scharowsky-Str. 1, 91058 Erlangen, Germany — 2Department of Materials Science VI, University Erlangen-Nuremberg, Germany — 3Department of Experimental Physics, University of Freiberg, Germany — 4Department of Materials Science, Technical University of Darmstadt, Germany
Recently OLEDs have gained increasing attention for their use in the field of lighting and signage. Large area OLEDs open up completely new areas of application by offering a new freedom in design and shape. They can be used as a 2-dimensional light source which is thin, flat and lightweight generating diffuse, non glaring illumination. Unlike existing organic displays, OLEDs for lighting need to be optimized with respect to larger active areas with brightnesses in the range of 1000 cd/m2. However, on large active areas defects such as dark or bright spots are far more likely to occur. As they can affect the lifetime of the device and deteriorate its appearance, the investigation of both the origin and the temporal evolution of inhomogeneities is a major issue. In our contribution we present results on OLEDs for lighting applications based on white light emitting copolymers. Performance and characteristics are discussed with regard to the topics mentioned above.