Journal
APPLIED PHYSICS LETTERS
Volume 97, Issue 22, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3521413
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Funding
- National Natural Science Foundation of China [61007020, 61036009, 60937001, 60907010]
- National High-Tech R and D Program of China (863 Program) [2008AA03A327]
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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. (C) 2010 American Institute of Physics. [doi: 10.1063/1.352141]
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