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US 2023/0157153 A1Published application
Organic electroluminescent materials and devices
AssigneeUniversal Display Corporation
InventorsBin MA, Chuanjun Xia, Chun Lin
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Abstract
Fluorine substituted metal complexes as efficient phosphorescent emitters is disclosed. The fluorine substitution is at para position of a phenyl group.
Claims20
A first device comprising a first organic light emitting device, the first organic light emitting device comprising:
- an anode;
- a cathode;
- and
- an organic layer, disposed between the anode and the cathode, comprising a host and an emissive dopant, wherein the emissive dopant is a compound having a structure according to Formula II or III:
- Formula II
- Formula III;
- wherein R1, R2, and R3 each independently represent mono, di, tri, or tetra substitutions, or no substitution;
- wherein R1 is selected from the group consisting of hydrogen, deuterium, alkyl, cycloalkyl, and combinations thereof;
- wherein R2 and R3 are each independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof;
- and
- wherein the compound is heteroleptic.
8 more elements
Dependencies are inferred from the claim text.