Simultaneous Extraction of Indium Tin Oxide/Organic and Substrate Waveguide Modes from Buckled Organic Light Emitting Diodes

We demonstrate that the devices with buckling as a grating can effectively extract the substrate mode as well as the indium tin oxide/organic mode even without any hemisphere lens or microlens array. This is achieved by multiple reflections of the substrate mode with the randomly buckled cathode layer through appropriate device dimensions. (C) 2011 The Japan Society of Applied Physics