Universal Display Corporation

Kit Yee Tsang

Raymond Kwong

Chi Hang Lee

Siu Tung Lam

Sze Kui Lam

Geza Szigethy

Chuanjun Xia

Ir phenyl parazolepyrazole complexes substituted with one or more strong electron withdrawing groups such as cyano groups resulted in enhancing the metal to ligand charge transfer (MLCT) which in turn resulted in enhanced emission efficiency and red shifted emission.

Organic electroluminescent materials and devices

A compound having a structure of Formula I: is described. In the structure of Formula I, R, R, and Rare each independently 5 or 6 membered aryl or heteroaryl rings; R, R, R, and A are selected from a variety of substituents, including being joined or fused to form a ring; A is optionally bonded to at least one benzo or azabenzo ring to form fused rings; Xis B, C, N, O, S or Se; and X-Xare independently B, C or N. Formulations and devices, such as an OLEDs, that include the compound containing a structure of Formula I are also described.

A family of phosphorescent emitter compounds containing a carbene ligand Lselected from the group consisting of: is disclosed. These compounds enhance the performance of OLEDs when incorporated therein.

The present invention includes novel borazarophenanthrene compounds, which may be used as hosts for phosphorescent emitters, charge transporters or emitters in OLEDs.

A compound containing a partial structure of Formula I: is provided. In the structure of Formula I, M is a metal with an atomic number of at least 40; R, R, and Rare each independently 5 or 6 membered aryl or heteroaryl rings; R, R, R, and A are each independently selected from a variety of substituents and combinations thereof; A is optionally bonded to Ror Rto form a fused ring; Xis B, C, N, O, S or Se; X-Xare independently B, C or N; and Y-Yare independently C or N. Formulations and devices, such as an OLEDs, that include the compound containing a structure of Formula I are also described.

The present disclosure provides novel compounds containing dibenzo[fg,op]tetracene and larger all-benzenoid moiety that can be used as hosts for phosphorescent emitters providing low-voltage, high-efficiency and high-stability devices.

A compound having a structure of Formula I: is provided. In the structure of Formula I, each one of Xto Xis independently CRor N; each Rand R are 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 acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, carbazole, azacarbazole, dibenzofuran, dibenzothiophene, dibenzoselenophene, azadibenzofuran, azadibenzothiophene, azadibenzoselenophene, triphenylene, azatriphenylene, and combinations thereof; and any adjacent Rcan join to form fused or unfused rings. Formulations and devices, such as an OLEDs, that include the compound containing a structure of Formula I are also described.

A compound including a ligand Lof Formula I, is described. In Formula I: rings A and B each independently represent a 5-membered or 6-membered carbocyclic or heterocyclic ring; X, Y, Z, and W are either carbon or nitrogen; Rto Rare selected from a variety of substituents, where adjacent substituents can be joined to form a fused ring; ligand Lis coordinated to a metal M by X-M and Y-M bonds; and ligand Lis optionally linked with other ligands to produce a tridentate, tetradentate, pentadentate or hexadentate ligand. Formulations and devices, such as an OLEDs, that include the compound that include a ligand Lof Formula I are also described.

Compounds having a structure according to Formula I, G-L-G, or Formula V, are described. In Formula I, Gand Gindependently have a structure of Formula II, In the structures of Formulae I, II, and V, Lconnects one of rings A1-A4 of Gto one of rings A1-A4 of G; Lis selected from a direct bond, BR, NR, PR, O, S, Se, C&#x2550;O, S&#x2550;O, SO, SiRR', GeRR&#x2032;, alkyl, cycloalkyl, aryl, heteroaryl, and combinations thereof; each ring A1, A2, A3, and A4, as well as R, R&#x2032;R&#x2033;, and Rto Rcan be hydrogen or a variety of substituents, including a fused ring between adjacent substituents; and at least two adjacent Rto Ron the same ring are Formulations and devices, such as an OLEDs, that include the compound of Formula I or V are also described.

A compound having the structure of Formula I is disclosed, where Ghas the structure and Ghas the structure In the structure of Formula I, Z is selected from Si and Ge; Xand Xare independently selected from the group consisting of O, S, and Se; the Y and Z atoms forming the six-membered rings in Formula I, G, and Gare each independently selected from C or N; each R, R, R, R, R, and Ris independently selected from a variety of substituents; at least one Ris L-A; at least one Ris L-A; Aand Aare each independently selected from carbazole, dibenzofuran, dibenzothiophene, dibenzoselenophene, triphenylene, and nitrogen-substituted variants thereof, which are optionally further substituted; and Land Lare each independently an organic linker. Formulations and devices, such as an OLEDs, that include the compound of Formula I are also described.

Compounds according to Formula 1, devices containing the same and formulations containing the same are described. Formula 1 has the following structure:  

Disubstituted pyrene compounds with amino group containing ortho aryl group and devices containing the same

Novel compounds, and in particular, novel molecules having twisted aryl groups are provided. In particular, the compounds include an aryl group at the ortho position relative to an amine nitrogen, thereby causing a twist within the compound from the plane of the aryl group due to the steric effect. As a result, this decreases the tendency of the molecules to pack closely and results in a higher solid state triplet energy due to reduced solid state &#x3c0;-stacking. Additionally, organic light emitting devices (OLEDs) comprising a layer including these novel compounds are provided.

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Hong Kong, China

Kit Yee Tsang