Hamburg 2001 – wissenschaftliches Programm
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SYOF: Organische Festkörper
SYOF 5: Poster Session
SYOF 5.42: Poster
Dienstag, 27. März 2001, 17:00–19:00, Aula S3
Combinatorial Study of Organic Devices — •Helmut Hänsel1, Heiko Zettl1, Armin Knoll1, Georg Krausch1, Christoph Schmitz2, Mukundan Thelakkat2, and Hans-Werner Schmidt2 — 1Universität Bayreuth, Physikalische Chemie II, D-95447 Bayreuth — 2Universität Bayreuth, Makromolekulare Chemie I, D-95447 Bayreuth
With the increasing demand for organic devices the understanding of their long-term behaviour becomes more and more important. We present the testing of multi-layer OLEDs with a systematic thickness variation of the layers. /par Two gradients of two different materials (e.g. Alq3, DiMeOTPD) are evaporated onto a square ITO-glass substrate. Evaporation of 8x8 Al-elctrodes leads to 64 different diodes. In order to study the long-term behaviour of the diodes, we have developed a setup for simultaneous testing where each diode is driven at constant current. Additionally, electroluminescence- and IV-curves a recorded regularly. This will give us further insight on how film thickness and layer order affect long-term stability and what processes are related to it.