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US 2019/0157576 A1Published application
Organic electroluminescent materials and devices
AssigneeUniversal Display Corporation
InventorsRaymond Kwong, Bin Ma, Chuanjun Xia, Bert Alleyne, Jason Brooks
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Abstract
Phosphorescent materials and devices with high device efficiency, stability, and processibility.
Claims20
An electronic display comprising an organic light emiding diode (OLED) comprising:
- an anode;
- a cathode;
- and
- an emissive organic layer, disposed between the anode and the cathode, the organic layer comprising a compound having a formula:
- wherein n is 1, 2 or 3;
- wherein each R1, R2, and R3 is independently selected from the group consisting of hydrogen, alkyl, and aryl;
- wherein at least one of R1 and R2 is a branched alkyl containing at least 4 carbon atoms, and
- wherein the branching occurs at a position further than the benzylic position;
- wherein R1 and R3 are mono-, di-, tri-, tetra-, or no substitutions;
- wherein R2 is mono-, di-, or no substitutions;
- and
- wherein X-Y is an ancillary ligand.
9 more elements
An electronic display comprising an organic light emitting diode (OLED) comprising:
- an anode;
- a cathode;
- and
- an emissive organic layer, disposed between the anode and the cathode, the organic layer further comprising a compound including a ligand having a formula:
- wherein each R1, R2, and R3 is independently selected from the group consisting of hydrogen, alkyl, and aryl;
- wherein at least one of R1 and R2 is a branched alkyl containing at least 4 carbon atoms, and wherein the branching occurs at a position further than the benzylic position;
- wherein R1 and R3 are mono-, di-, tri-, tetra-, or no substitutions;
- and
- wherein R2 is mono-, di-, or no substitutions.
6 more elements
An emissive layer comprising a host material doped with a compound having a formula:
- wherein n is 1, 2 or 3;
- wherein each R1, R2, and R3 is independently selected from the group consisting of hydrogen, alkyl, and aryl;
- wherein at least one of R1 and R2 is a branched alkyl containing at least 4 carbon atoms, and wherein the branching occurs at a position further than the benzylic position;
- wherein R1 and R3 are mono-, di-, tri-, tetra-, or no substitutions;
- wherein R2 is mono-, di-, or no substitutions;
- and
- wherein X-Y is an ancillary ligand.
4 more elements
Dependencies are inferred from the claim text.