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HL: Halbleiterphysik
HL 19: Organische Halbleiter I
HL 19.2: Vortrag
Dienstag, 25. März 2003, 11:15–11:30, BEY/81
Flexible Polymeric OLEDs fabricated on Plastic Films — •R. Paetzold1,2, D. Henseler1, K. Heuser1, H. Mendel1,2, W. Sarfert1,2, G. Wittmann1, and A. Winnacker2 — 1Siemens AG, CT MM 1, Paul-Gossen-Str. 100, 91052 Erlangen, Germany — 2University Erlangen-Nuernberg, Department of Materials Science, Martensstr. 7, D-91058 Erlangen, Germany
Organic Light Emitting Displays (OLEDs) have to compete with several established display technologies on the market. One frequently mentioned advantage of OLEDs compared to TFTs and LCDs is the possibility to build up bendable and moreover flexible devices. They open up new degrees of freedom for design and applications. Building organic devices on non-rigid substrates, like plastic films, causes challenges in terms of encapsulation, manufacturing process and, last but not least, the organic materials’ intrinsic properties. In this work we present results on flexible OLEDs, in particular focusing on the last two aspects. By transferring the OLED process from glass to foil several manufacturing steps have to be adapted (e.g. annealing steps). These changes are reflected in the diodes performance and in the lifetime. Furthermore we show that the flexibility of organic devices is limited by the properties of anode and cathode materials. The response of the organic semiconductors to mechanical stress has been investigated.