Answers are grounded in this paper and cite their sources.
The emission intensity of an organic light-emitting diode at normal viewing angle and the total external emission efficiency have been increased by factors of 9.6 and 3.0, respectively, by applying spherically shaped patterns to the back of the device substrate. The technique captures light previously lost to waveguiding in the substrate and, with proper choice of substrate, light previously lost to waveguiding in the organic/anode layers. A method of applying the technique using laminated films and an optical model for evaluating coupling efficiency are also presented.
No takes yet. Share an insight, caveat, or question.
Madigan et al. (2000) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: