Organic metal compounds and organic light-emitting devices employing the same are provided. The organic metal compound has a chemical structure of Formula (I) or Formula (II): ##STR00001##
In particular, one of the following two conditions (1) and (2) is met: (1) R.sup.1 is deuterium or C.sub.1-6 deuterated alkyl group, when R.sup.3 and R.sup.4 are independently hydrogen, halogen, C.sub.1-6 alkyl group, C.sub.1-6 fluoroalkyl or C.sub.3-12 heteroaryl group; and (2) R.sup.1 is hydrogen, deuterium, C.sub.1-6 alkyl group, C.sub.1-6 deuterated alkyl group, C.sub.3-12 heteroaryl group, or C.sub.6-12 aryl group, when at least one of R.sup.3 and R.sup.4 is C.sub.6-12 aryl group or C.sub.6-12 fluoroaryl group.

A condensed cyclic compound represented by Formula 1 and an organic light-emitting device including the same: ##STR00001##
wherein, in Formulae 1, Y.sub.11 is a group represented by Formulae 2-1 to 2-3 and Y.sub.12 is a group represented by Formulae 3-1 to 3-5, 4-1, or 4-2 as described herein.

A compound of:

##STR00001##

is disclosed. In Formula III, ring B and ring C are each independently a 5 or 6-membered carbocyclic or heterocyclic ring; A-B represents a bonded pair of carbocyclic or heterocyclic rings coordinated to a metal M via a nitrogen atom in ring A and an sp.sup.2 hybridized atom in ring B; A-C represents a bonded pair of carbocyclic or heterocyclic rings; M is a metal having an atomic number greater than 40; L′ is a monoanionic bidentate ligand; m is the oxidation state of the metal M; and n is at least 1.

The invention relates to an electronic device, to the use thereof, and to a method for the production thereof.

The present application relates to an electronic device, to the use thereof, and to a process for production thereof.

The present invention includes a novel series of host materials for OLEDs based on substituted fused 1,2,4-triazines. The compounds of the invention may improve the device EQE and lifetime.

A novel compound is disclosed which includes a ligand L.sub.A of Formula II,

##STR00001##

wherein: ring B is independently a 5-membered or 6-membered carbocyclic or heterocyclic ring; X.sup.1 to X.sup.4 are each independently selected from the group consisting of C, N, and CR; at least one pair of adjacent X.sup.1 to X.sup.4 are each C and fused to Formula V

##STR00002##  where indicated by “”; X.sup.5 to X.sup.12 are each independently C or N; the maximum number of N within a ring is two; Z and Y are each independently selected from the group consisting of O, S, Se, NR′, CR′R″, SiR′R″, and GeR′R″; R.sup.B and R.sup.C each independently represents zero, mono, or up to a maximum allowed substitutions to its associated ring; each of R.sup.B, R.sup.C, R, R′, and R″ is independently hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, boryl, and combinations thereof; and two substituents can be joined or fused to form a ring; the ligand L.sub.A is complexed to a metal M through the two indicated dash lines of each Formula; and the ligand L.sub.A can be joined with other ligands to form a tridentate, tetradentate, pentadentate, or hexadentate ligand.

Provided are an organic electroluminescent material and a device comprising the same. The organic electroluminescent material is a metal complex comprising a ligand L.sub.a having a structure of Formula 1A and a ligand L.sub.b having a structure of Formula 1B. Such new types of compound can be applied to an electroluminescent device to improve luminescence performance, efficiency or a lifetime of the device, exhibit more saturated luminescence and significantly improve overall performance of the device. Further provided are an electroluminescent device comprising the metal complex and a compound composition comprising the metal complex.

Provided are an organic electroluminescent material and a device thereof. The organic electroluminescent material includes a metal M and at least one C{circumflex over ( )}N bidentate ligand L.sub.a coordinated with the metal M, the maximum emission wavelength of the photoluminescence spectrum of the organic electroluminescent material at room temperature is greater than or equal to 410 nm and less than or equal to 700 nm, and the emission spectrum area ratio of the organic electroluminescent material is less than or equal to 0.145. The metal complex has significant advantages in organic electroluminescent devices, in particular the improvement of device efficiency. Further provided are an organic electroluminescent device including the metal complex and a compound composition including the metal complex.

Provided is an OLED having an anode, a cathode and an organic emissive layer disposed between the anode and the cathode. The emissive layer includes a first host; and a first emitter; wherein the first emitter is selected from the following group: (L.sup.1-L.sup.2).sub.nIr(L.sub.A).sub.3−n and (L.sub.B).sub.nIr(L.sup.3-L.sup.4).sub.3−n; wherein (L.sup.1-L.sup.2).sub.nIr(L.sub.A).sub.3−n is

##STR00001##