Enhancing light extraction in top-emitting organic light-emitting devices using molded transparent polymer microlens arrays.
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.
Department of Materials Science and Engineering, University of Florida, Gainesville, 32611, USA.
Edward
E
Wrzesniewski
Sang-Hyun
SH
Eom
Weiran
W
Cao
William T
WT
Hammond
Sangjun
S
Lee
Elliot P
EP
Douglas
Jiangeng
J
Xue