An organic electroluminescence device of an embodiment includes a first electrode, a second electrode facing the first electrode, and multiple organic layers disposed between the first electrode and the second electrode, wherein the organic layers include at least one organic layer including a fused polycyclic compound represented by Formula 1, thereby showing improved emission efficiency.

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A light emitting device includes an emission layer disposed between electrodes. The emission layer includes a host and a delayed fluorescence dopant. The delayed fluorescence dopant includes a fused polycyclic compound represented by Formula 1:

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Provided are compounds comprising a structure comprising at least five rings which are fused together, and which contain a central nitrogen atom, wherein at least two of the five rings are aromatic and at least one ring is a five-membered ring which is optionally aromatic. Also provided are formulations comprising these compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these compounds.

Provided are compounds comprising a structure of the following Formula I:

##STR00001##

where the structure of Formula I can be coordinated to a metal M.

Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

A compound of the following structure has excellent luminescence characteristics. One of X.sup.1 and X.sup.2 is N and the other is B, and R.sup.1 to R.sup.26, A.sup.1, and A.sup.2 are H or substituents.

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A light emitting diode includes a first electrode, a second electrode disposed on the first electrode, and at least one functional layer disposed between the first electrode and the second electrode. The at least one functional layer includes a compound represented by Formula 1, thereby exhibiting high efficiency and long lifespan.

##STR00001##

Compounds of formula (Ia) and/or formula (Ib),

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are disclosed wherein R1 and R3 are independently selected from the group consisting of H, halogen, alkyl, fluorinated or partly fluorinated alkyl, and heteroaryl, R2 is selected from the group consisting of halogen, fluorinated and partly fluorinated alkyl, R4 and R5 are independently selected from the group consisting of halogen, alkyl, fluorinated or partly fluorinated alkyl, alkenyl, alkinyl, alkoxy, aryl, and heteroaryl, Z is independently selected from the group consisting of CH.sub.2, CHR6 or CR7R8, with R6, R7 and R8 independently selected from the group consisting of H, halogen, alkyl, alkoxy, aryl, and heteroaryl, wherein n is independently 1, 2 or 3, U, V and W of formula (Ia) independently form an aryl ring or a heteroaryl ring, and T, U, V and W of formula (Ib) form an aryl ring or a heteroaryl ring.

The disclosure pertains to an organic molecule for use in optoelectronic devices. The organic molecule has a structure of Formula I:

##STR00001## wherein X is selected from the group consisting of a direct bond, NR.sup.1, O, S, SiR.sup.1R.sup.2 and CR.sup.1R.sup.2; Y is selected from the group consisting of a direct bond, NR.sup.3, O, S, SiR.sup.3R.sup.4 and CR.sup.3R.sup.4; and R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are each independently selected from the group consisting of: hydrogen, deuterium, N(R.sup.5).sub.2, OR.sup.5, SR.sup.5, Si(R.sup.5).sub.3, B(OR.sup.5).sub.2, OSO.sub.2R.sup.5, CF.sub.3, CN, halogen, C.sub.1-C.sub.40-alkyl, C.sub.1-C.sub.40-alkoxy, C.sub.1-C.sub.40-thioalkoxy, C.sub.2-C.sub.40-alkenyl, C.sub.2-C.sub.40-alkynyl, C.sub.6-C.sub.60-aryl, and C.sub.3-C.sub.57-heteroaryl.

The disclosure relates to an organic molecule, in particular for the application in optoelectronic devices. According to the disclosure, the organic molecule has a structure represented by Formula I:

##STR00001##

In Formula 1, R.sup.I, R.sup.II, R.sup.III, R.sup.IV, R.sup.V, R.sup.VI, R.sup.VII, R.sup.VIII, R.sup.IX, R.sup.X and R.sup.XI are each independently selected from the group consisting of: hydrogen, deuterium, halogen, C.sub.1-C.sub.12-alkyl, wherein optionally one or more hydrogen atoms are each independently substituted by R.sup.5, C.sub.6-C.sub.18-aryl, wherein optionally one or more hydrogen atoms are each independently substituted by R.sup.5, and C.sub.3-C.sub.15-heteroaryl. R.sup.5 is independently selected from the group consisting of: hydrogen, deuterium, C.sub.1-C.sub.12-alkyl, and C.sub.6-C.sub.18aryl, wherein optionally one or more hydrogen atoms are each independently substituted by C.sub.1-C.sub.5-alkyl substituents; T, V, W, and X are each independently selected from the group consisting of: C.sub.1-C.sub.12-alkyl, and C.sub.6-C.sub.18-aryl, wherein optionally one or more hydrogen atoms are each independently substituted by C.sub.1-C.sub.5-alkyl substituents.

An organoelectroluminescent device according to the present invention can achieve low-voltage driving and high-efficiency luminous characteristics with excellent external quantum efficiency by employing compounds having a characteristic structure as a hole transport material and a dopant material in a hole injection layer or hole transport layer and a light-emitting layer respectively, and thus can be effectively used in industrial applications such as flat display devices, flexible display devices, monochrome or white flat lighting devices, and monochrome or white flexible lighting devices.