Abstract: Provided are boron-containing compounds. Also provided are formulations comprising these boron-containing compounds. Further provided are OLEDs and related consumer products that utilize these boron-containing compounds.

Abstract: Provided are compounds comprising a Si or Ge atom to which three monocyclic or fused polycyclic ring systems comprised of one or more 5-membered or 6-membered rings as well as one selected from the group consisting of B, BR, Al, Ga, N, P, As, Sb, Bi, P?X?, As?X?, Sb?X?, and Bi?X? are attached. Also provided are formulations comprising these compounds. Further provided are organic light emitting diodes (OLEDs) and related consumer products that utilize these compounds.

Abstract: A compound comprising a first ligand LA of Formula I, where R* has a structure of Formula II, is provided. In Formula I and Formula II, moiety A is a 5-membered or 6-membered ring; each of Z1 and Z2 is C or N; K is a single bond or a linking group; each of X1 to X11 is C or N; Y is a linking group; L is a direct bond or a linker, each R, R?, R?, R?, RA, RB, RC, and RD is hydrogen or a General Substituent; LA is coordinated to Ir by the dashed lines. Formulations, OLEDs, and consumer products comprising the compare are also provided.

Abstract: A compound having a formula M(LA)x(LB)y(LC)z, where each of LA, LB, and LC is a different bidentate ligand is provided. In formula M(LA)x(LB)y(LC)z, x+y+z is equal to the valence of the metal M, the first ligand LA has a structure of Formula I, each of moiety A and moiety B is a monocyclic ring or a polycyclic fused ring system; each of X1 to X4 and Z1 and Z2 is C or N; each of K1, K2, and L1 is a direct bond of a linker; L1 is a direct bond or an organic linker; each R substituent is hydrogen or a General Substituent defined herein; and at least one RA or RB comprises a ring D that is an electron-deficient heterocyclic ring comprising one or two ring carbon atoms. Formulations, OLEDs, and consumer products containing such compounds are also provided.

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, each of X1 to X12 is C or N; Y is a linking group; each RA, RB and RC can be hydrogen or a substituent; at least one RA, RB or RC comprises an electron-withdrawing group; and LA forms a 5-membered chelate ring with an Ir atom via the dashed lines. In addition a number of conditions must be met based on whether or not any pair of RA is joined to form a ring. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided is a new composition of matter for phosphorescent emitters containing a chelating ligand including five or more fused carbocyclic or heterocyclic rings that form two bonds to a metal forming a 7-membered chelate. This fused ring structure provides added rigidity to the molecule for enhanced stability in an OLED device and improve photophysical properties.

Abstract: An OLED is disclosed where the OLED includes, sequentially: an anode; a hole transporting layer; an emissive region; an electron transporting layer; and a cathode; where the emissive region includes a compound S1; and a compound A1. The compound S1 is an organometallic sensitizer that transfers energy to the compound A1, and the compound A1 is an acceptor that is an emitter in the emissive region. The compound S1 has a vertical dipole ratio (VDR) value greater than or equal to 0.2; and the compound A1 has a VDR value less than or equal to 0.2.

Abstract: Provided is an organic light emitting device (OLED) comprising: an anode; a hole transporting layer; an emissive region; an electron transporting layer; and a cathode; wherein the emissive region comprises: a first compound; a second compound; and a third compound; wherein the first compound is a sensitizer that transfers energy to the second compound; wherein the second compound is an acceptor that is an emitter; wherein the third compound is a first host, and at least one of the first compound and the second compound is doped in the third compound; wherein at least two of the first, second, and the third compounds comprises same or different substituent R*; wherein R* is selected from the group consisting of: moieties E and F, RE, and RF are defined herein. Also provided are related formulations, related premixed co-evaporation sources, related consumer products and related method of making those OLED devices.

Abstract: Provided is an organic light emitting device (OLED) comprising: an anode; a cathode; and an emissive region disposed between the anode and the cathode; wherein the emissive region comprises: a compound S1; a compound A1; a compound S2; and a compound A2; wherein the compound S1 is a sensitizer that transfers energy to the compound A1; and the compound S2 is a sensitizer that transfers energy to the compound A2; wherein each of the compound A1 and A2 is independently an acceptor that is an emitter; wherein the compound S1 can be same or different from the compound S2; wherein the compound A1 can be same or different from the compound A2; and wherein at least one of the following conditions is true: (1) the compound S1 is different from the compound S2; (2) the compound A1 is different from the compound A2. Also provided are related formulations, related premixed co-evaporation sources, related consumer products and related method of making those OLED devices.

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, each of X1 to X6 is C or N; K is a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), or Si(R?)(R?); LA is coordinated to Ir through the indicated dashed lines; at least one of the following conditions is true: (1) R1 comprises at least five carbon atoms, and (2) two RB substituents are joined together to form a structure of Formula II, fused to ring B; X is CRX or N; Y is selected from a variety of linkers; each R, R?, R?, R?, R?, RA, RB, RX, R1, and R2 is hydrogen or a General Substituent; and Ir may be coordinated to other ligands. Compositions, OLEDs, and consumer products including the compound are also provided.

Abstract: Provided is a full-color pixel arrangement of a device comprising at least one pixel: wherein the at least one pixel comprises: a first subpixel comprising a first OLED comprising a first emissive region; a second subpixel comprising a second OLED comprising a second emissive region; wherein the first emissive region comprises: a compound S1; a compound A1; and a compound H1; wherein the second emissive region comprises: a compound A2; and a compound H2; wherein the compound S1 is a sensitizer that transfers energy to the compound A1; wherein the compound A1 is an acceptor that is an emitter; wherein the compound H1 is a host, and at least one of the compounds S1 and A1 is doped with the compound H1; wherein the compound A2 is an emitter; wherein the compound H2 is a host, and the compound A2 is doped with the compound H2.

Abstract: Provided are new organometallic compounds which are tetradentate and which comprise either a platinum or a palladium atom as the central metal atom. Also provided are formulations which comprise these new organometallic compounds. Further provided are organic light emitting diodes (OLEDs) and related consumer products that utilize these new organometallic compounds.

Abstract: A compound of Formula I wherein Y is selected from the group consisting of NAr, O, S, and Se; Ar is an optionally substituted aryl or optionally substituted heteroaryl; and Z1 to Z8 are independently selected from C or N, wherein at least one of Z2 or Z3 is C, and at least one of Z6 or Z7 is C. R is selected from the group consisting of deuterium, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, aryl, heteroaryl, nitrile, isonitrile, sulfanyl, and combinations thereof; or optionally R can join with Ar to from a ring; and with the provisios that R is not N-methyl-benzimidazole, and the compound is not compound A.

Abstract: Provided are organic compounds including a structure wherein two 6-membered aromatic rings are connected with a direct bond and further linked by a linker selected from the group consisting of O, S, Se; NR, BR, BRR?, PR, CR, C?O, C?NR, C?CRR?, C?S, CRR?, SO, SO2, P(O)R, SiRR?, and GeRR? so to form a 5-membered ring including the linker. Also provided are formulations comprising these organic compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these organic compounds.

Abstract: Arrangements for phosphorescent blue emissive materials, layers, and devices are provided. The arrangements include a host having first a triplet energy level of at least 2.8 eV and an absolute difference of not more than 0.3 eV between the first singlet and triplet energy levels, and an emitter that includes an emissive transition metal complex and a first triplet energy level of at least 2.7 eV.

Abstract: Provided are organic light emitting devices (OLED) comprising an anode; a cathode, and an organic layer between the anode and the cathode, the organic layer comprising a light-emitting dopant within a host material, the light-emitting dopant being an optically active Pt complex comprising a tetradentate ligand; wherein one enantiomer of the optically active Pt complex is present in an enantiomeric excess (ee) of at least 5%. Further provided are OLEDs comprising an anode, a cathode, and an organic layer between the anode and the cathode, the organic layer the organic layer comprising a light-emitting chiral dopant within a chiral host material, the light-emitting chiral dopant being an optically active complex; wherein one enantiomer of the optically active complex of the chiral dopant is present in an ee of at least 5%, and wherein one enantiomer of the chiral host material is present in an ee of at least 5%.

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, moiety C is a monocyclic ring or fused polycyclic system; each of X1 to X6 is C or N; K is a direct bond or a linker; at least one of RB or RC has the formula ---L-SiR1R2R3, or ---L-GeR1R2R3; L is a direct bond or an organic linker; each R?, R?, R1, R2, R3, RA, RB, and RC is hydrogen or a General Substituent defined herein; LA is coordinated to a metal M by the dashed lines in Formula I; and M has an atomic mass of at least 40 and may be coordinated to other ligands. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are boron-containing compounds. Also provided are formulations comprising these boron-containing compounds. Further provided are OLEDs and related consumer products that utilize these boron-containing compounds.

Abstract: Provided is a new composition of matter for phosphorescent emitters containing a chelating ligand including five or more fused carbocyclic or heterocyclic rings that form two bonds to a metal forming a 7-membered chelate. This fused ring structure provides added rigidity to the molecule for enhanced stability in an OLED device and improve photophysical properties.

Abstract: Provided are organometallic compounds comprising a ligand which comprises a first moiety A which is a heterocyclic ring comprising at least 7 ring atoms selected from the group consisting of C, Si, B, O, S, and N, and a second moiety B which is a 5-membered or 6-membered carbocyclic or heterocyclic ring. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these organometallic compounds.