White light emitting oleds from combined monomer and aggregate emission
First Claim
1. An organic light emitting device comprising an emissive layer, wherein the emissive layer comprises an aggregate emitter, a monomer emitter, and a matrix material comprising mCP,
- wherein the emission from the aggregate emitter is lower in energy than the emission from the monomer emitter, and wherein the combined emission of the aggregate emitter and the monomer emitter sufficiently spans the visible spectrum to give a white emission.
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Abstract
The present invention relates to efficient organic light emitting devices (OLEDs). More specifically, the present invention relates to white-emitting OLEDs, or WOLEDs. The devices of the present invention employ two emitters in a single emissive region to sufficiently cover the visible spectrum. White emission is achieved from two emitters in a single emissive region through the formation of an aggregate by one of the emissive centers. This allows the construction of simple, bright and efficient WOLEDs that exhibit a high color rendering index.
901 Citations
23 Claims
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1. An organic light emitting device comprising an emissive layer, wherein the emissive layer comprises
an aggregate emitter, a monomer emitter, and a matrix material comprising mCP, - wherein the emission from the aggregate emitter is lower in energy than the emission from the monomer emitter, and wherein the combined emission of the aggregate emitter and the monomer emitter sufficiently spans the visible spectrum to give a white emission.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An organic light emitting device comprising
an anode; -
a hole transporting layer;
an emissive layer comprising an aggregate emitter, a monomer emitter, and a matrix material comprising mCP, an electron transporting layer; and
a cathode;
wherein the emission from the aggregate emitter is lower in energy than the emission from the monomer emitter, and wherein the combined emission of the aggregate emitter and the monomer emitter sufficiently spans the visible spectrum to give a white emission. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification