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Title: OLED with improved light outcoupling

Abstract

An OLED may include regions of a material having a refractive index less than that of the substrate, or of the organic region, allowing for emitted light in a waveguide mode to be extracted into air. These regions can be placed adjacent to the emissive regions of an OLED in a direction parallel to the electrodes. The substrate may also be given a nonstandard shape to further improve the conversion of waveguide mode and/or glass mode light to air mode. The outcoupling efficiency of such a device may be up to two to three times the efficiency of a standard OLED. Methods for fabricating such a transparent or top-emitting OLED is also provided.

Inventors:
;
Issue Date:
Research Org.:
The Regents of the University of Michigan, Ann Arbor, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1333726
Patent Number(s):
9,508,957
Application Number:
12/531,595
Assignee:
The Regents of the University of Michigan (Ann Arbor, MI)
DOE Contract Number:  
FG02-04ER84113; FC26-04NT42272
Resource Type:
Patent
Resource Relation:
Patent File Date: 2008 Mar 31
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION

Citation Formats

Forrest, Stephen, and Sun, Yiru. OLED with improved light outcoupling. United States: N. p., 2016. Web.
Forrest, Stephen, & Sun, Yiru. OLED with improved light outcoupling. United States.
Forrest, Stephen, and Sun, Yiru. Tue . "OLED with improved light outcoupling". United States. https://www.osti.gov/servlets/purl/1333726.
@article{osti_1333726,
title = {OLED with improved light outcoupling},
author = {Forrest, Stephen and Sun, Yiru},
abstractNote = {An OLED may include regions of a material having a refractive index less than that of the substrate, or of the organic region, allowing for emitted light in a waveguide mode to be extracted into air. These regions can be placed adjacent to the emissive regions of an OLED in a direction parallel to the electrodes. The substrate may also be given a nonstandard shape to further improve the conversion of waveguide mode and/or glass mode light to air mode. The outcoupling efficiency of such a device may be up to two to three times the efficiency of a standard OLED. Methods for fabricating such a transparent or top-emitting OLED is also provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {11}
}

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Works referenced in this record:

Optical thin-film materials with low refractive index for broadband elimination of Fresnel reflection
journal, March 2007