The objective of the present invention is to provide: a compound capable of ensuring high light-emitting efficiency and low driving voltage of an element, and increasing the lifespan thereof; an organic electrical element using compound; and an electronic device comprising the same.

Provided is a metal complex which is excellent in quantum yield and full width at half maximum of a light emission spectrum. The metal complex is represented by the following formula (1):

##STR00001##

wherein M represents an iridium atom or the like, n.sub.1 represents 1 to 3, n.sub.2 represents 0 to 2, X.sup.1 to X.sup.8 represent a carbon atom or the like, R.sup.1 to R.sup.8 represent a hydrogen atom or the like, one of X.sup.a and X.sup.b is a single bond, and the other is a group represented by —CR.sup.11R.sup.12—CR.sup.13R.sup.14—, R.sup.11 to R.sup.14 represent an alkyl group or the like, ring A represents a heteroaromatic ring, and A.sup.1-G.sup.1-A.sup.2 represents an anionic bidentate ligand.

An organic electroluminescence device includes: an anode; a cathode; an emitting layer provided between the anode and the cathode, in which the emitting layer contains a delayed fluorescent compound M2 and a compound M3 represented by a formula (3), and a singlet energy S.sub.1(M2) of the compound M2 and a singlet energy S.sub.1(M3) of the compound M3 satisfy the relationship S.sub.1(M3)>S.sub.1(M2). In the formula (3), A.sub.30 is a group represented by a formula (3a) or the like.

##STR00001##

An organic light-emitting device including a first electrode, a second electrode facing the first electrode, and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer comprises an emission layer and satisfies Equations 1 and 2,

E.sub.T1(HOST)−E.sub.T1(AD)>0.05 eV  Equation 1

E.sub.S1(FD)−E.sub.S1(AD)<0 eV,  Equation 2 wherein in Equation 1, E.sub.T1(HOST) is a triplet energy (eV) of the host, and E.sub.T1(AD) is a triplet energy (eV) of the auxiliary dopant, and wherein in Equation 2, E.sub.S1(FD) is a singlet energy (eV) of the fluorescent dopant, and E.sub.S1(AD) is a singlet energy (eV) of the auxiliary dopant, wherein the emission layer comprises a host, an auxiliary dopant, and a fluorescent dopant, and wherein the auxiliary dopant is selected from compounds represented by Formula 1:

##STR00001## wherein in Formula 1, Ar.sub.1 and R.sup.11 to R.sup.16 are the same as described in the specification.

The present invention relates to compounds which are suitable for use in electronic devices, and to electronic devices, in particular organic electroluminescent devices, comprising these compounds. The compounds have a dibenzofuran, dibenzothiophene or a fluorene group substituted in the 1-position, either directly or through a linking group, to a carbon atom of a heteroaromatic group with one or two nitrogen atoms in a bicyclic 6/6 core, or to a carbon or nitrogen atom of a heteroaromatic group with two nitrogen atoms in a bicyclic 5/6 core and is further substituted with a group selected from dibenzofuran, dibenzothiophene, fluorene or carbazole.

Disclosed herein are metal compounds useful in devices, such as, for example, OLEDs.

A heterocyclic compound is represented by Formula 1. A light-emitting device may include a first electrode, a second electrode facing the first electrode, and an interlayer between the first electrode and the second electrode and including an emission layer, and the light-emitting device may include at least one heterocyclic compound represented by Formula 1. In Formula 1, the substituents are the same as defined in the detailed description.

##STR00001##

A compound comprising a hexadentate ligand of Formula I coordinated to a metal selected from the group consisting of iridium, rhodium, and osmium;

##STR00001## wherein rings A, B, C, D, E, and F are independently a 5-membered or 6-membered heteroaryl ring, or a 6-membered aryl ring; T.sup.1, T.sup.2, T.sup.3, T.sup.4, T.sup.5, and T.sup.6 are independently selected from C or N, wherein two to four of T.sup.1 to T.sup.6 are C, and two to four of T.sup.1 to T.sup.6 are N; Z.sup.1, Z.sup.2, Z.sup.3, and Z.sup.4 are independently selected from C or N, wherein if Z.sup.1 and Z.sup.2 are each N then T.sup.1 is a carbene carbon and two of T.sup.2 to T.sup.6 are N; Y.sup.1 and Y.sup.2 are independently selected from the group consisting of CR, SiR, B, or N; W.sup.1-W.sup.7 are independently selected from the group consisting of a direct bond, BR, BRR′, NR, PR, O, S, Se, C═X, S═O, SO.sub.2, CR, CRR′, SiRR′, GeRR′, alkyl, cycloalkyl, aryl, heteroaryl, and combinations thereof; wherein X is selected from the group consisting of O, S, Se, NR′, and CR″R′″; R.sup.A to R.sup.F independently represent mono to the maximum allowable substitution, or no substitution; each R, R′, R″, R′″, and R.sup.A to R.sup.F is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, boryl, arylalkyl, alkoxy, aryloxy, amino, silyl, germyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, selenyl, and combinations thereof, and any two adjacent substituents R, R′, R″, R′″, and R.sup.A to R.sup.F are optionally joined to form a fused ring.

The present invention relates to metal complexes and electronic devices, in particular organic electroluminescent devices, containing said metal complexes.

The present disclosure relates to an organic metal compound having the following structure of Formula 1, an organic light emitting diode (OLED) and an organic light emitting device that includes the organic metal compound. The OLED and the organic light emitting device including the organic metal compound can improve their luminous efficiency, luminous color purity and lifespan.

|r(L.sub.A).sub.m(L.sub.B).sub.n   [Formula 1]