Low-haze light extraction from organic light-emitting diode lighting with auxiliary electrode by selective microlens arrays.
@article{Hwang2013LowhazeLE,
title={Low-haze light extraction from organic light-emitting diode lighting with auxiliary electrode by selective microlens arrays.},
author={Ju Hyun Hwang and Tae Hyun Park and Hyun Jun Lee and Kyung Bok Choi and Young Wook Park and Byeong Kwon Ju},
journal={Optics letters},
year={2013},
volume={38 20},
pages={
4182-5
}
}Improved out-coupling efficiency and low haze of organic light-emitting diode (OLED) lighting with an auxiliary electrode are demonstrated by selective microlens arrays (SMLAs). The microlens arrays, aligned with the auxiliary electrode, were selectively fabricated, since the fully packed microlens arrays lead to OLED lighting with high haze. The external quantum efficiency and power efficiency of the devices with the SMLAs increased by 32% when compared with the devices without these arrays…
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References
SHOWING 1-10 OF 13 REFERENCES
Close-packed hemispherical microlens arrays for light extraction enhancement in organic light-emitting devices
- Materials Science
- 2011
White organic light-emitting diodes with fluorescent tube efficiency
- PhysicsNature
- 2009
An improved OLED structure which reaches fluorescent tube efficiency and focuses on reducing energetic and ohmic losses that occur during electron–photon conversion, which could make white-light OLEDs, with their soft area light and high colour-rendering qualities, the light sources of choice for the future.
Enhancing waveguided light extraction in organic LEDs using an ultra-low-index grid.
- ChemistryOptics letters
- 2010
Improved outcoupling of light into substrate modes of an organic LED (OLED) by an ultra-low index of refraction (n=1.15), porous SiO(2) grid (UltraLIG) fabricated using glancing-angle deposition is…
An efficient non-Lambertian organic light-emitting diode using imprinted submicron-size zinc oxide pillar arrays
- Engineering
- 2013
We report phosphorescent organic light-emitting diodes with a substantially improved light outcoupling efficiency and a wider angular distribution through applying a layer of zinc oxide periodic…
Patterned microlens array for efficiency improvement of small-pixelated organic light-emitting devices.
- Physics, EngineeringOptics express
- 2008
A center-hollowed microlens array is proposed, of which the microlenses directly upon the pixel are removed, and it is proved that it can increase the luminous current efficiency and luminous power efficiency of a small-pixelated OLED.
Light Extraction of Organic Light Emitting Diodes by Defective Hexagonal-Close-Packed Array
- Physics
- 2012
Defective silica sphere arrays having locally hexagonal-closed-packed structure but lack of long range ordering were incorporated into organic light emitting diodes as grating to extract the…
Nearly 100% internal phosphorescence efficiency in an organic light emitting device
- Chemistry, Physics
- 2001
We demonstrate very high efficiency electrophosphorescence in organic light-emitting devices employing a phosphorescent molecule doped into a wide energy gap host. Using…
Management of singlet and triplet excitons for efficient white organic light-emitting devices
- ChemistryNature
- 2006
This device challenges incandescent sources by exhibiting total external quantum and power efficiencies that peak at 18.7 ± 0.6 lm W-1, respectively, and two distinct modes of energy transfer within this device serve to channel nearly all of the triplet energy to the phosphorescent dopants, retaining the singlet energy exclusively on the blue fluorescent dopant.
Inhomogeneous luminance in organic light emitting diodes related to electrode resistivity
- Physics
- 2006
In organic light emitting diodes (OLEDs) with transparent electrodes, the luminance usually becomes inhomogeneous if the size of the pixel increases above 10mm. A theoretical model for inhomogeneous…






