Enhancing Light Extraction in Top‐Emitting Organic Light‐Emitting Devices Using Molded Transparent Polymer Microlens Arrays
- 8 June 2012
- Vol. 8 (17), 2647-2651
- https://doi.org/10.1002/smll.201102662
Abstract
The light extraction efficiency in organic light‐emitting devices (OLEDs) is enhanced by up to 2.6 times when a close‐packed, hemispherical transparent polymer microlens array (MLA) is molded on the light‐emitting surface of a top‐emitting device. The microlens array helps to extract the waveguided optical emission in the organic layers and the transparent top electrode, and can be manufactured in large area with low cost.Keywords
This publication has 34 references indexed in Scilit:
- Transparent oxide/metal/oxide trilayer electrode for use in top-emitting organic light-emitting diodesJournal of Photonics for Energy, 2011
- Organic light-emitting device luminaire for illumination applicationsApplied Physics Letters, 2006
- Surface plasmon-polariton mediated emission from phosphorescent dendrimer light-emitting diodesApplied Physics Letters, 2006
- Enhancing light outcoupling of organic light-emitting devices by locating emitters around the second antinode of the reflective metal electrodeApplied Physics Letters, 2006
- Measuring the Efficiency of Organic Light‐Emitting DevicesAdvanced Materials, 2003
- High-efficiency top-emitting organic light-emitting devicesApplied Physics Letters, 2002
- Improved light out-coupling in organic light emitting diodes employing ordered microlens arraysJournal of Applied Physics, 2002
- Transient analysis of organic electrophosphorescence. II. Transient analysis of triplet-triplet annihilationPhysical Review B, 2000
- Improvement of output coupling efficiency of organic light-emitting diodes by backside substrate modificationApplied Physics Letters, 2000
- Organic light-emitting device with an ordered monolayer of silica microspheres as a scattering mediumApplied Physics Letters, 2000