Area-selective external light extraction for metal bus equipped large area transparent organic light-emitting diodes

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Area-selective external light extraction films based on wrinkle structured films were applied to large transparent organic light-emitting diodes (TOLEDs) with auxiliary metal buses. To be specific, on the external surface of the glass, we selectively formed a wrinkle structured film, which was aligned to the auxiliary metal electrodes. The wrinkle-structured film was patterned using a photo-mask and UV curing, which has the same shape of the auxiliary metal electrodes. With this area-selective film, it was possible to enhance the external quantum efficiencies of the bottom and top emissions TOLEDs by 15.7% and 15.1%, respectively, without significant loss in transmittance. Widened angular luminance distributions were also achieved in both emissions directions.
Publisher
OPTICAL SOC AMER
Issue Date
2016-03
Language
English
Article Type
Article
Keywords

EFFICIENT; DEVICES; ARRAYS; INDEX; CATHODE; OLEDS; LAYER; FILMS

Citation

OPTICS EXPRESS, v.24, no.5, pp.5356 - 5365

ISSN
1094-4087
DOI
10.1364/OE.24.005356
URI
http://hdl.handle.net/10203/208327
Appears in Collection
EE-Journal Papers(저널논문)
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