Organic light emitting device structures for obtaining chromaticity stability
Patent
·
OSTI ID:1175332
The present invention relates to organic light emitting devices (OLEDs). The devices of the present invention are efficient white or multicolored phosphorescent OLEDs which have a high color stability over a wide range of luminances. The devices of the present invention comprise an emissive region having at least two emissive layers, with each emissive layer comprising a different host and emissive dopant, wherein at least one of the emissive dopants emits by phosphorescence.
- Research Organization:
- Universal Display Corporation, Ewing, NJ (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-02ER83565
- Assignee:
- Universal Display Corporation (Ewing, NJ)
- Patent Number(s):
- 6,885,025
- Application Number:
- 10/618,160
- OSTI ID:
- 1175332
- Country of Publication:
- United States
- Language:
- English
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Nearly 100% internal phosphorescence efficiency in an organic light-emitting device
|
journal | November 2001 |
High-efficiency electrophosphorescent organic light-emitting diodes with double light-emitting layers
|
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