Berlin 2008 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 10: POSTERS New Materials, Organic Semiconductors

CPP 10.11: Poster

Monday, February 25, 2008, 16:45–19:00, Poster A

Investigation of phosphorescent blue organic light emitting diodes — •Chien-Shu Chiu^1,3, Ralf Krause^2,3, Fryderyk Kozlowski³, Arvid Hunze³, and Wolfgang Kowalsky¹ — ¹Department of Electrical Engineering & Information Technology, Technical University of Braunschweig, Germany — ²Department of Materials Science VI, University of Erlangen-Nuremberg, Germany — ³Siemens AG, CT MM 1, Günther-Scharowsky-Str. 1, 91058 Erlangen, Germany

Recently, rapid development of phosphorescent materials has significantly improved the efficiency of organic light emitting diodes (OLEDs). By using efficient phosphorescent emitter materials white OLEDs with high power efficiency values could be demonstrated. But especially blue phosphorescent devices, due to stability issues, need to be further investigated und optimized. In this work, blue OLED devices based on the phosphorescent emitter FIrpic were investigated. Single-carrier hole-only as well as electron-only devices were fabricated and characterized to study the impact of charge carriers on device performance.