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US 12,598,906 B2Granted
Organic electroluminescent materials and devices
OwnerChun Lin, Zhiqiang Ji +2inventors
InventorsChun Lin, Zhiqiang Ji, Ting-Chih Wang, Pierre-Luc T. Boudreault
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Abstract
Provided is an OLED having an anode, a cathode and an organic emissive layer disposed between the anode and the cathode. The emissive layer includes a first host; and a first emitter; wherein the first emitter is selected from the following group: (L1-L2)nIr(LA)3−n and (LB)nIr(L3-L4)3−n; wherein (L1-L2)nIr(LA)3−n is and (LB)nIr(L3-L4)3−n is
Claims20
An organic light emitting device (OLED), comprising:
- an anode;
- a cathode;
- and
- an organic emissive layer disposed between the anode and the cathode comprising:
- a first host;
- and
- a first emitter;
- wherein the first emitter is (L1-L2)nIr(LA)3−n;
- wherein (L1-L2)nIr(LA)3−n is
- wherein L1-L2 represents an anionic bidentate ligand;
- wherein n is 1 or 2;
- wherein each of RS1, RS2, RS3, RS4, RS5, and RS6 is independently selected from the group consisting of alkyl, cycloalkyl, partially or fully fluorinated variants thereof, partially or fully deuterated variants thereof, and combinations thereof;
- wherein at least one of RS1 to RS6 is not CH3;
- wherein any two substituents of RS1, RS2, RS3, RS4, RS5, and RS6 can be joined or fused into a ring;
- wherein at least one of the following is true:
- (1) RS1 is joined with RS2 to form a ring;
- (2) RS1 is joined with RS2 to form a ring, and RS4 is joined with RS5 to form a ring;
- or
- (3) at least one of RS1 to RS6 is partially or fully fluorinated alkyl;
- and
- wherein the first host comprises at least one donor group GD, and at least one acceptor group GA.
18 more elements
An emissive layer comprising:
- a first host;
- and
- a first emitter;
- wherein the first emitter is (L1-L2)nIr(LA)3−n;
- wherein (L1-L2)nIr(LA)3−n is
- wherein L1-L2 represents an anionic bidentate ligand;
- wherein n is 1 or 2;
- wherein each of RS1, RS2, RS3, RS4, RS5, and RS6 is independently selected from the group consisting of alkyl, cycloalkyl, partially or fully fluorinated variants thereof, partially or fully deuterated variants thereof, and combinations thereof;
- wherein at least one of RS1 to RS6 is not CH3;
- wherein any two substituents of RS1, RS2, RS3, RS4, RS5, and RS6 can be joined or fused into a ring;
- wherein at least one of the following is true:
- (1) RS1 is joined with RS2 to form a ring;
- (2) RS1 is joined with RS2 to form a ring, and RS4 is joined with RS5 to form a ring;
- or
- (3) at least one of RS1 to RS6 is partially or fully fluorinated alkyl;
- and
- wherein the first host comprises at least one donor group GD, and at least one acceptor group GA.
14 more elements
A consumer product comprising an organic light emitting device (OLED), comprising:
- an anode;
- a cathode;
- and
- an organic emissive layer disposed between the anode and the cathode comprising:
- a first host;
- and
- a first emitter;
- wherein the first emitter is (L1-L2)nIr(LA)3−n;
- wherein (L1-L2)nIr(LA)3−n is
- wherein L1-L2 represents an anionic bidentate ligand;
- wherein n is 1 or 2;
- wherein each of RS1, RS2, RS3, RS4, RS5, and RS6 is independently selected from the group consisting of alkyl, cycloalkyl, partially or fully fluorinated variants thereof, partially or fully deuterated variants thereof, and combinations thereof;
- wherein at least one of RS1 to RS6 is not CH3;
- wherein any two substituents of RS1, RS2, RS3, RS4, RS5, and RS6 can be joined or fused into a ring;
- wherein at least one of the following is true:
- (1) RS1 is joined with RS2 to form a ring;
- (2) RS1 is joined with RS2 to form a ring, and RS4 is joined with RS5 to form a ring;
- or
- (3) at least one of RS1 to RS6 is partially or fully fluorinated alkyl;
- and
- wherein the first host comprises at least one donor group GD, and at least one acceptor group GA.
18 more elements
Dependencies are inferred from the claim text.