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Intrinsic OLED emitter properties and their effect on device performance

: Wächter, C.A.; Danz, N.; Michaelis, D.; Flämmich, M.; Kudaev, S.; Bräuer, A.H.; Gather, M.C.; Meerholz, K.


Streubel, K.P. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Light-emitting diodes: research, manufacturing, and applications XII : 22 - 24 January 2008, San Jose, California, USA
Bellingham, WA: SPIE, 2008 (SPIE Proceedings Series 6910)
ISBN: 978-0-8194-7085-0
Paper 691006
Conference "Light-Emitting Diodes - Research, Manufacturing, and Applications" <12, 2008, San Jose/Calif.>
Fraunhofer IOF ()
organic light emitting diode; RGB emitter; intrinsic efficiency; light extraction; micro optic; grating; optimization

The optical properties of OLEDs can be tailored by optimization of the layer stack and by implementation of micro- and/or nano-optical structures. But the effect of changing the OLED configuration on the device performance crucially depends on the optical properties of the emissive layer. The aim of this contribution is twofold. First, we will propose and demonstrate a general and reliable method to determine the intrinsic optical emitter properties via simple optical characterization and corresponding reverse simulations. Second, the influence of the emitter properties on homogeneous OLEDs as well as on OLEDs with micro/nano-optical structures is discussed.