Organic electroluminescent materials and devices
AssigneeUniversal Display Corporation
InventorsChuanjun Xia, Bert Alleyne, Raymond C. Kwong, James Fiordeliso, Michael S. Weaver, Nasrin Ansari, Alan Deangelis, Dinesh Rayabarapu, Vadim Adamovich
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Abstract
Methods of making novel organic compounds containing a twisted aryl group are provided. In particular, the compounds provided contain a 2-phenylpyridine ligand having a twisted aryl group on the pyridine portion of the ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants. Devices comprising the compounds containing twisted aryl may demonstrate improved color, efficiency, stability and manufacturing.
Claims22
An organic light emitting device (OLED), comprising:
- an anode;
- a cathode;
- and
- an organic layer, disposed between the anode and the cathode, the organic layer comprising a heteroleptic complex having the formula Ir(LA-B)2(LC-D),
- wherein LA-B is
- wherein LC-D is selected from the group consisting of
- wherein R1, R2, R3, R4 and R5 are each independently selected from the group consisting of hydrogen and alkyl;
- and
- wherein each of R1, R2, R3, R4 and R5 may represent mono, di, tri, tetra, or penta substitutions.
An emissive layer, comprising a heteroleptic complex having the formula Ir(LA-B)2(LC-D),
- wherein LA-B is
- wherein LC-D is selected from the group consisting of
- wherein R1, R2, R3, R4 and R5 are each independently selected from the group consisting of hydrogen and alkyl;
- and
- wherein each of R1, R2, R3, R4 and R5 may represent mono, di, tri, tetra, or penta substitutions.
A consumer product comprising a device, the device comprising:
- an anode;
- a cathode;
- and
- an organic layer, disposed between the anode and the cathode, the organic layer comprising a heteroleptic complex having the formula Ir(LA-B)2(LC-D),
- wherein LA-Bis
- wherein LC-D is selected from the group consisting of
- wherein R1, R2, R3, R4 and R5 are each independently selected from the group consisting of hydrogen and alkyl;
- and
- wherein each of R1, R2, R3, R4 and R5 may represent mono, di, tri, tetra, or penta substitutions.
Dependencies are inferred from the claim text.