title: Extraction of guided modes from organic emission layers by compound binary gratings.
abstract: The extraction of guided modes from a 100 nm organic emission layer by compound binary gratings with multiple superimposed periods at different ratios is investigated. We measure angle-dependent photoluminescence from samples with double-period (350 and 450 nm), triple-period (350, 400, and 450 nm), and multiperiod (350, 400, 450, and 500 nm) gratings and show that each period component produces two outcoupling features due to first-order Bragg scattering of the TE(0) guided mode. The averaged angular color change is reduced by up to a factor of 11 compared to a single-period grating structuring.
authors: Institute of Electrical and Information Engineering, Christian-Albrechts-Universität zu Kiel, Kaiserstr. 2 24143 Kiel, Germany. ckl@tf.uni‑kiel.de
authors: Christian
authors: C
authors: Kluge
authors: Michael
authors: M
authors: Rädler
authors: Arfat
authors: A
authors: Pradana
authors: Matthias
authors: M
authors: Bremer
authors: Peter-Jürgen
authors: PJ
authors: Jakobs
authors: Nicole
authors: N
authors: Barié
authors: Markus
authors: M
authors: Guttmann
authors: Martina
authors: M
authors: Gerken