Organic light emitting device architecture for reducing the number of organic materials
Patent
·
OSTI ID:1028663
- Westampton, NJ
- Levittown, PA
An organic light emitting device is provided. The device includes an anode and a cathode. A first emissive layer is disposed between the anode and the cathode. The first emissive layer includes a first non-emitting organic material, which is an organometallic material present in the first emissive layer in a concentration of at least 50 wt %. The first emissive layer also includes a first emitting organic material. A second emissive layer is disposed between the first emissive layer and the cathode, preferably, in direct contact with the first emissive layer. The second emissive material includes a second non-emitting organic material and a second emitting organic material. The first and second non-emitting materials, and the first and second emitting materials, are all different materials. A first non-emissive layer is disposed between the first emissive layer and the anode, and in direct contact with the first emissive layer. The first non- emissive layer comprises the first non-emissive organic material.
- Research Organization:
- Universal Display Corporation (Ewing, NJ)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-06ER84582
- Assignee:
- Universal Display Corporation (Ewing, NJ)
- Patent Number(s):
- 8,040,053
- Application Number:
- 12/332,945
- OSTI ID:
- 1028663
- Country of Publication:
- United States
- Language:
- English
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