Abstract: Cyclometalated iridium complexes having triphenylene or aza triphenylene and bulky alkyl substitution that can be used as emitters in OLEDs to improve the external quantum efficiency (EQE) and lifetime of OLEDs are disclosed.

Abstract: An organic light emitting device having an anode, a cathode and an organic layer disposed between the anode and the cathode is provided. In one aspect, the organic layer comprises a compound having at least one zwitterionic carbon donor ligand.

Abstract: A compound of formula Ir(LA)m(LB)n is provided, where m and n are 1 or 2, and m + n = 3; where ligand LA has a structure of Formula I, ; ligand LB has a structure of Formula II, and LA and LB are different. In Formulae I and II, moiety E is a ring or polycyclic fused ring system; each of X1 to X10 is C or N; Y is a linking group that forms a 5-membered ring; each R*, R?, R?, RA, RB, RC, RD, and RF is hydrogen or a General Substituent; RE is hydrogen or a General Substituent other than silyl; and RE and at least one of RA or RB comprise aliphatic carbon atoms. Formulations, OLEDs, and consumer products containing the compound are also provide.

Abstract: A compound having the formula Ir(LA)n(LB)3-n, having the structure of Formula I is provided. In the structure of Formula I, each of A1 through A8 is independently carbon or nitrogen; at least one of A1 through A8 is nitrogen; ring B is bonded to ring A through a C—C bond; the iridium is bonded to ring A through an Ir—C bond; X is O, S, or Se; each of R1 through R5 are independently selected from a variety of substituents, which may be linked for form a ring; n is an integer from 1 to 3; and at least one R2 adjacent to ring C is not hydrogen. Formulations and devices, such as OLEDs, that include the first compound are also provided.

Abstract: Provided are organometallic compounds comprising an at least two-dentate ligand comprising at least one 5-membered or 6-membered carbocyclic or heterocyclic ring. Further provided are organometallic compounds containing a platinum atom as the central metal atom. Also described are their various uses including as emitters in devices such as organic light emitting diodes and related electronic devices. Also provided are formulations comprising these organometallic compounds containing a platinum atom as the central metal atom. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these organometallic compounds.

Abstract: Provided are compounds compound comprising a first ligand LA of Formula I: wherein R1 and R2 are each independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, germyl, boryl, selenyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; wherein LA is coordinated to a metal M through the indicated dashed lines; wherein M may be coordinated to other ligands; wherein LA may be joined with other ligands to comprise a tridentate, tetradentate, pentadentate, or hexadentate ligand; and wherein any two substituents may be joined or fused to form a ring. Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

Abstract: A compound having a metal coordination complex structure, where the compound is capable of functioning as a phosphorescent emitter in an organic light emitting device at room temperature is disclosed. The compound has a first ligand coordinated to a metal. The free-state of the first ligand has a first triplet energy T1 of EL at 77K, while the compound has a first triplet energy T1 of E at 77K, and the difference in energy (?E) between E and EL is ?250 meV. The compound has a triplet emission spectrum with a FWHM value of no more than 45 nm. Organic light emitting devices, consumer products, and formulations containing the compounds are also disclosed.

Abstract: Novel Iridium complexes having three different bidentate ligands useful for phosphorescent emitters in OLEDs are disclosed. At least one of the three different bidentate ligands is a carbene ligand.

Abstract: Provided are compounds capable of functioning as an emitter in an organic light emitting device at room temperature, and their use in OLED related electronic devices.

Abstract: Novel metal compounds having a first ligand LA that has the following formula: Formula I useful as emitters in OLED application are disclosed.

Abstract: A compound having a first ligand LA of Formula I useful as phosphorescent dopant in OLEDs is disclosed.

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In addition, C1 and C2 are joined to a structure of Formula II, In the first ligand, C1 and C2 are carbon atoms; K is selected from the group consisting of a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), and Si(R?)(R?); each of Y1 and Y2 is O, S, Se, NR, CR?R?, SiR?R?, GeR?R?, BR?, BR?R?, or PR?; Z is selected from the group consisting of N, CR?, SiR?, and GeR?; moiety B is a monocyclic ring or a fused polycyclic ring structure; each R?, R?, RA, RB, R, R?, and R? is hydrogen or a General Substituent; the first ligand is coordinated to a metal M; and any two of RA, RB, R, R? and R? can be joined or fused to form a ring. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound including a first ligand LX of Formula II is disclosed, where F is a 5-membered or 6-membered carbocyclic or heterocyclic ring; each RF and RG independently represents mono to the maximum possible number of substitutions, or no substitution; Z3 and Z4 are each independently C or N and coordinated to a metal M to form a 5-membered chelate ring; G is a fused ring structure comprising five or more fused heterocyclic or carbocyclic rings, of which one or two rings are of Formula III the fused heterocyclic or carbocyclic rings in the fused ring structure G are 5-membered or 6-membered; of which if two or more 5-membered rings are present, at least two of the 5-membered rings are fused to one another; Y can be one of BR?, NR?, PR?, O, S, Se, C?O, S?O, SO2, CR?R?, SiR?R?, and GeR?R?; the metal M can be coordinated to other ligands; and the ligand LX can be linked with other ligands to comprise a tridentate, tetradentate, pentadentate, or hexadentate ligand.

Abstract: A compound having the formula: Formula I is disclosed. The compound is useful as emitters in OLEDs.

Abstract: A compound having the formula [LA]yIr[LB]x is disclosed, where LA is selected from one of the following: The compounds have at least one pyridyl dibenzo-substituted ligand that coordinates to metal center from the sterically hindered position as exemplified by LA. Because of this unique configuration, the compounds display better photo-physical and thermal properties and can be used in OLED devices to improve their performance, particularly with respect to the device's lifetime.

Abstract: A compound comprising a ligand LA, having a structure of Formula I, is provided. In Formula I, A1 to A8 are each independently CR or N; at least two adjacent ones of A1 to A8 are CR and the Rs are joined together to form a six-membered ring fused to ring A or ring C; X is O, S, or Se; each R and RB is independently hydrogen or a substituent; any adjacent substituents are optionally joined or fused into a ring; the ligand LA is coordinated to a metal M; the metal M is bonded to ring A through a M-C bond; the metal M can be coordinated to other ligands; and the ligand LA is optionally linked with other ligands. Formulations, OLEDs, and consumer products containing such compounds are also disclosed.

Abstract: An OLED including an anode, a cathode, and an organic layer between the anode and the cathode, where the organic layer includes a compound having the formula [LA]3-nIr[LB]n is disclosed.

Abstract: Cyclometallated iridium complexes having triphenylene or aza triphenylene and bulky alkyl substitution that can be used as emitters in OLEDs to improve the external quantum efficiency (EQE) and lifetime of OLEDs are disclosed.

Abstract: A compound having the formula Ir(LA)n(LB)3-n, having the structure of Formula I is provided. In the structure of Formula I, each of A1 through A8 is independently carbon or nitrogen; at least one of A1 through A8 is nitrogen; ring B is bonded to ring A through a C—C bond; the iridium is bonded to ring A through an Ir—C bond; X is O, S, or Se; each of R1 through R5 are independently selected from a variety of substituents, which may be linked for form a ring; n is an integer from 1 to 3; and at least one R2 adjacent to ring C is not hydrogen. Formulations and devices, such as OLEDs, that include the first compound are also provided.

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, Ring A is a 5-membered or 6-membered ring, and moiety G has a structure of where the dashed line marked with * is coordinated to Ir; the dashed line marked with # is bonded to Ring A; Y is selected from the group consisting of BR, BRR?, NR, PR, O, S, Se, C?O, C?S, C?Se, C?NR, C?CRR?, S?O, SO2, CR, CRR?, SiRR?, and GeRR?. Formulations, OLEDs, and consumer products containing the compound are also provided.