OLED with improved light outcoupling
Patent
·
OSTI ID:1333726
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.
- Research Organization:
- The Regents of the University of Michigan, Ann Arbor, MI (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-04ER84113; FC26-04NT42272
- Assignee:
- The Regents of the University of Michigan (Ann Arbor, MI)
- Patent Number(s):
- 9,508,957
- Application Number:
- 12/531,595
- OSTI ID:
- 1333726
- Country of Publication:
- United States
- Language:
- English
Optical thin-film materials with low refractive index for broadband elimination of Fresnel reflection
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journal | March 2007 |
Doubling Coupling-Out Efficiency in Organic Light-Emitting Devices Using a Thin Silica Aerogel Layer
|
journal | August 2001 |
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