Title :
Improved optical outcoupling of OLED microdisplays by nanostructured substrates
Author :
Pfeifer, R. ; Fehse, K. ; Vogel, U. ; Leo, K.
Author_Institution :
COMEDD - Center for Org. Mater. & Electron. Devices Dresden, Fraunhofer IPMS, Dresden, Germany
Abstract :
We present optical simulations of the light outcoupling efficiency of an OLED-anode design which allows the integration of a grating with high refractive index contrast into a topemitting OLED with standard CMOS technology. We demonstrate the effective coupling of the grating with the confined organic modes and therefore changing the outcoupling efficiency with respect to the planar OLED-stack.
Keywords :
CMOS integrated circuits; LED displays; anodes; microdisplays; organic light emitting diodes; OLED microdisplay; OLED-anode design; grating integration; light outcoupling efficiency; nanostructured substrate; optical simulation; planar OLED-stack; refractive index contrast; standard CMOS technology; top-emitting OLED; Anodes; Couplings; Diffraction gratings; Gratings; Lattices; Optical waveguides; Organic light emitting diodes; enhanced top emission; gratings; microdisplays; optical simulation; organic light-emitting diodes;
Conference_Titel :
Semiconductor Conference Dresden (SCD), 2011
Conference_Location :
Dresden
Print_ISBN :
978-1-4577-0431-4
DOI :
10.1109/SCD.2011.6068687
