Light out-coupling enhancement of organic light-emitting devices with microlens array
- 29 November 2010
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 97 (22), 223303
- https://doi.org/10.1063/1.3521413
Abstract
Light out-coupling efficiency of organic light-emitting devices from high-index glass substrate into air is enhanced by attaching ordered microlens arrays, which are fabricated by a roll-to-roll mold transfer process. The dependence of microlens geometries on light extraction is analyzed experimentally and theoretically. An increase of 60% in the light out-coupling with an optimized elliptical microlens array is achieved over a conventional device without affecting the electroluminescent spectrum.Keywords
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