Spectrally tunable stacked OLED
Abstract
An OLED lighting device comprising: a blue light-emitting unit with a blue-light fluorescent, phosphorescent or TADF emitter; a yellow light-emitting electroluminescent unit comprising a green phosphorescent emitter, a red phosphorescent emitter and at least one non-emitting host; wherein the blue light-emitting unit and the yellow light-emitting unit are separated by a mixed interlayer with two non-emitting charge-carrier materials. Desirably, the yellow-light emitting unit essentially consists of a green phosphorescent emitter, a red phosphorescent emitter and a single non-emitting host. The mixed interlayer desirably has more than 50% of a hole-transporting material and an electron-transporting material. The Triplet Energy of both materials in the mixed interlayer can be higher than the Triplet Energies of the R and G phosphorescent dopants. The HOMOs of both materials in the mixed interlayer are more negative than the HOMO of the host in the yellow unit but less negative than the HOMO of the host in the blue unit. The LUMOs of the materials in the mixed interlayer can be more negative than the LUMO of the host in the yellow unit but less negative than the LUMO of the host in the blue unit. The OLED lighting device is spectrally tunable according to themore »
- Inventors:
- Issue Date:
- Research Org.:
- OLEDWorks LLC, Rochester, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 2293965
- Patent Number(s):
- 11844230
- Application Number:
- 17/172,398
- Assignee:
- OLEDWorks LLC (Rochester, NY)
- DOE Contract Number:
- EE0008211
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 02/10/2021
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Spindler, Jeffrey, and Kondakova, Marina. Spectrally tunable stacked OLED. United States: N. p., 2023.
Web.
Spindler, Jeffrey, & Kondakova, Marina. Spectrally tunable stacked OLED. United States.
Spindler, Jeffrey, and Kondakova, Marina. Tue .
"Spectrally tunable stacked OLED". United States. https://www.osti.gov/servlets/purl/2293965.
@article{osti_2293965,
title = {Spectrally tunable stacked OLED},
author = {Spindler, Jeffrey and Kondakova, Marina},
abstractNote = {An OLED lighting device comprising: a blue light-emitting unit with a blue-light fluorescent, phosphorescent or TADF emitter; a yellow light-emitting electroluminescent unit comprising a green phosphorescent emitter, a red phosphorescent emitter and at least one non-emitting host; wherein the blue light-emitting unit and the yellow light-emitting unit are separated by a mixed interlayer with two non-emitting charge-carrier materials. Desirably, the yellow-light emitting unit essentially consists of a green phosphorescent emitter, a red phosphorescent emitter and a single non-emitting host. The mixed interlayer desirably has more than 50% of a hole-transporting material and an electron-transporting material. The Triplet Energy of both materials in the mixed interlayer can be higher than the Triplet Energies of the R and G phosphorescent dopants. The HOMOs of both materials in the mixed interlayer are more negative than the HOMO of the host in the yellow unit but less negative than the HOMO of the host in the blue unit. The LUMOs of the materials in the mixed interlayer can be more negative than the LUMO of the host in the yellow unit but less negative than the LUMO of the host in the blue unit. The OLED lighting device is spectrally tunable according to the supplied power.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2023},
month = {12}
}
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