An organic molecule is disclosed having a structure of Formula I: ##STR00001##
wherein X is O or S; Y is O or S; R.sup.1 is selected from the group consisting of: hydrogen, deuterium, C.sub.1-C.sub.5-alkyl, which is optionally substituted with one or more substituents R.sup.5; C.sub.6-C.sub.60-aryl, which is optionally substituted with one or more substituents R.sup.5; and C.sub.3-C.sub.57-heteroaryl,
which is optionally substituted with one or more substituents R.sup.5.

Disclosed herein are a novel organometallic compound and an organic light-emitting diode including same. More specifically, an organometallic compound represented by [Chemical Formula 1] and an organic light-emitting diode including same are provided.

The present disclosure provides a nitrogen-containing compound, and an electronic component and an electronic device including the same, and belongs to the technical field of organic electroluminescence. The nitrogen-containing compound provided by the present disclosure has polycyclic conjugation properties, the compound has a core structure of fused indolocarbazole. The bond energy between the atoms is high, thus the compound has a good thermal stability, and facilitates solid state accumulation between the molecules. The electroluminescence device with the compound as a luminescent layer material has a long service life. According to the nitrogen-containing compound provided by the present disclosure with an indolocarbazole structure connecting with a nitrogen-containing group (triazine, pyridine and pyrimidine) and a benzoxazole or benzothiazole group respectively has a high dipole moment, thereby improving the polarity of the material. Using the nitrogen-containing compound of the present disclosure as the luminescent layer material of the organic electroluminescence device, the electron transport performance of the device can be improved, and the luminous efficiency and service life of the device can be improved.

The present invention relates to a compound of the formula (I), (II) or (III), to the use of the compound in an electronic device, and to an electronic device comprising a compound of the formula (I), (II) or (III). The present invention furthermore relates to a process for the preparation of a compound of the formula (I), (II) or (III) and to a formulation comprising one or more compounds of the formula (I), (II) or (III).

The present disclosure discloses a deuterated organic compound and a formulation and an organic electronic device containing the same, wherein the deuterated organic compound has the following structural formula:

##STR00001##

wherein Ar is an aromatic or heteroaromatic structural unit, D is an electron donor group, A is an electron acceptor group, n and m are an integer between 1 and 6; and wherein for the organic compound, (S1-T1)≦0.25 eV, and at least one H atom of the organic compound is substituted by deuterium. The present disclosure achieves the improvement of the electroluminescence quantum efficiency and the lifetime of the organic compound by replacing the H atom in the organic compound with deuterium and having (S1-T1)≦0.35 eV, and the material of the present disclosure has a great application potential and application range due to its low cost and relatively simple synthesis process.

A compound having the formula Ir(L.sub.A).sub.n(L.sub.B).sub.3-n, having the structure ##STR00001##
of Formula I is provided. In the structure of Formula I, each of A.sup.1 through A.sup.8 is independently carbon or nitrogen; at least one of A.sup.1 through A.sup.8 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 R.sup.1 through R.sup.5 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 R.sup.2 adjacent to ring C is not hydrogen. Formulations and devices, such as OLEDs, that include the first compound are also provided.

The present invention relates to an organic electroluminescent device containing a mixture which comprises an electron-transporting host material and a hole-transporting host material, to a formulation comprising a mixture of the host materials and to a mixture comprising the host materials. The electron-transporting host material corresponds to a compound of the formula (1) from the class of compounds containing two triazine units. The hole-transporting host material corresponds to a compound of the formula (2) from the class of the biscarbazoles or derivatives thereof.

The present invention relates to iridium complexes suitable for use in organic electroluminescent devices, especially as emitters.

An organic electroluminescence device includes a first electrode, an organic layer disposed on the first electrode, and a second electrode disposed on the organic layer. The organic layer includes an organometallic compound represented by Formula 1 below. ##STR00001##
where R.sub.1 to R.sub.4, X.sub.1 to X.sub.4, Ar.sub.1 to Ar.sub.3, M, Q, m1 to m4, and n are as defined in the specification.

The present invention relates to organic light emitting elements, comprising thermally activated delayed fluorescence (TADF) emitters and/or hosts of formula ##STR00001##
which have a sufficiently small energy gap between S.sub.1 and T.sub.1 (ΔE.sub.ST) to enable up-conversion of the triplet exciton from T.sub.1 to S.sub.1. The organic light emitting elements show high electroluminescent efficiency.