Patent ID: 11925102
Assignee: UNIVERSAL DISPLAY CORPORATION
Field: Basic materials chemistry (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 13:
14. A first organic light emitting device comprising:
an anode;
a cathode; and
an organic layer, disposed between the anode and the cathode, comprising a heteroleptic compound having a formula Ir(LA)n(LB)3-n:
wherein the ligand LA is, wherein the ligand LB is selected from the group consisting of:, wherein, if LB is, , at least one of X5 to X8 is N;
wherein each X1 to X13 are independently selected from the group consisting of carbon and nitrogen;
wherein X is selected from the group consisting of BR′, NR′, PR′, O, S, Se, C═O, S═O, SO2, CR′R″, SiR′R″, and GeR′R″;
wherein R′ and R″ are optionally fused or joined to form a ring;
wherein each Ra, Rb, Rc, and Rd may represent from mono substitution to the possible maximum number of substitution, or no substitution;
wherein R′, R″, Ra, Rb, Rc, and Rd 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 any two adjacent substituents of Ra, Rb, Rc, and Rd are optionally fused or joined to form a ring or form a multidentate ligand
wherein LA is a different ligand from LB;
wherein n is 1 or 2;
wherein RA represents mono, di, tri, or tetra-substitution, or no substitution;
wherein RB represents mono, di, tri, or tetra-substitution;
wherein X3 of ligand LA is C and RB at X3 has the following structure:, wherein RA and RB are each independently selected from the group consisting of hydrogen, deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acid, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof, and any two adjacent RB are optionally joined or fused into a ring;
adjacent RA cannot be joined or fused into a ring;
wherein R1 and R2 are each independently selected from the group consisting of alkyl, cycloalkyl, partially fluorinated alkyl, partially fluorinated cycloalkyl, and their partially deuterated or fully deuterated analogs, and combinations thereof;
wherein R1 and R2 are each attached to the ring E by a carbon; and
wherein at least one of R1 and R2 is selected from the group consisting of:,