High-contrast organic light emitting diodes with a partially absorbing anode.
To be legible in high-ambient light conditions, organic light-emitting-diode displays should be optically designed to have a minimal reflectance without significantly affecting their overall efficiency. We demonstrate the use of an anode consisting of a partially absorbing metal layer and a multilayer distributed Bragg reflector to simultaneously absorb rather than reflect incoming light and to take advantage of a weak microcavity effect in the diode to improve light outcoupling.
Py
Christophe
C
Institute for Microstructural Sciences, National Research Council of Canada, 1200 Montreal Road, Ottawa, Ontario K1A 0R6, Canada. Christophe.py@nrc.ca
Poitras
Daniel
D
Kuo
Chien-Cheng
CC
Fukutani
Hiroshi
H