The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound of the present disclosure, an organic electroluminescent device having high luminous efficiency and/or long lifespan properties can be provided compared to conventional organic electroluminescent devices.

Provided are a condensed cyclic compound and an organic light-emitting device including the same. The organic light-emitting device may include a first electrode, a second electrode, and an organic layer disposed between the first electrode and the second electrode. The organic layer may include the condensed cyclic compound represented by Formula 1:

##STR00001##

In Formula 1, rings A.sub.1, A.sub.2, and A.sub.3 may each be independently a C.sub.5-C.sub.60 carbocyclic group or a C.sub.2-C.sub.30 heterocyclic group, and n1 to n3 may each be independently 0 or 1, provided that the sum of n1, n2, and n3 is 1. In addition, the descriptions of X.sub.1, L.sub.1 to L.sub.9, a1 to a9, Ar.sub.1 to Ar.sub.6, b1 to b6, R.sub.1 to R.sub.3, and c1 to c3 are as defined in the present specification.

Indolocarbazole tetraphenylene compounds are disclosed. These novel compounds contain tetraarylene or tetraheteroarylene which can be used as charge transporting materials, charge blocking materials, hosts or emitters in an organic electroluminescent device. These novel compounds offer better device performance than comparative compounds that don't contain a tetraarylene or tetraheteroarylene structure. Also disclosed are an electroluminescent device and a formulation.

This invention discloses a novel multicomponent system or a single compound that is capable of performing triplet-triplet annihilation up conversion process. (TTA-UC) A solution or solid film that comprises this TTA-UC system or compound is provided. This system or compound can be used in an optical or optoelectronic device.

The present disclosure relates to a composition material for an organic electroluminescent device, a plurality of host materials, and an organic electroluminescent device comprising the same. By comprising the composition material for an organic electroluminescent device comprising a specific combination of compounds, an organic electroluminescent device having high luminous efficiency and/or long lifespan characteristics can be produced.

The present disclosure relates to an organic compound having the following structure, and an organic light emitting diode (OLED) and an organic light emitting device including the organic compound. Applying the organic compound into an emissive layer makes the OLED and the organic light emitting device lower their driving voltage, improves their luminous efficiency and color purity.

##STR00001##

An organic compound represented by formula [1] is provided.

##STR00001##

Ring A is a polycyclic aromatic hydrocarbon ring having a fluoranthene skeleton and having 16 to 60 carbon atoms and optionally has, as a substituent, a substituted or unsubstituted alkyl group or the like. Rings B.sub.1 and B.sub.2 are aromatic hydrocarbon rings having 6 to 18 carbon atoms and each have two or more electron withdrawing groups. Q.sub.1 and Q.sub.2 respectively represent one of the electron withdrawing groups of the ring B.sub.1 and one of the electron withdrawing groups of the ring B.sub.2, and are respectively located at an ortho position of the ring B.sub.1 and at an ortho position of the ring B.sub.2 with respect to the ring A.

The present invention relates to an organic electronic device comprising, between an anode and a cathode, at least one layer selected from an electron injection layer, an electron transport layer or an electron generation layer, the layer comprising at least one compound of the following Formula (I), wherein the compound of Formula (I) comprises one or more moieties -(A).sub.a-L and the remaining positions marked with * are hydrogen or substituents independently selected from the group consisting of deuterium, fluorine, RF, C.sub.1-C.sub.20 linear alkyl, C.sub.3-C.sub.20 branched alkyl, C.sub.1-C.sub.12 linear fluorinated alkyl, CN, RCN, C.sub.6-C.sub.20 aryl, C.sub.2-C.sub.20 heteroaryl, (PO)R.sub.2; wherein each R is independently selected from C.sub.1-C.sub.20 linear alkyl, C.sub.1-C.sub.20 alkoxy, C.sub.1-C.sub.20 thioalkyl, C.sub.3-C.sub.20 branched alkyl, C.sub.3-C.sub.20 cyclic alkyl, C.sub.3-C.sub.20 branched alkoxy, C.sub.3-C.sub.20 cyclic alkoxy, C.sub.3-C.sub.20 branched thioalkyl, C.sub.3-C.sub.20 cyclic thioalkyl, C.sub.6-C.sub.20 aryl and C.sub.2-C.sub.20 heteroaryl; A is selected from substituted or unsubstituted C.sub.6-C.sub.24 aryl or C.sub.2-C.sub.20 heteroaryl; wherein in case that A is substituted, the respective substituents are independently selected from the group consisting of deuterium, fluorine, C.sub.1-C.sub.20 linear alkyl, C.sub.3-C.sub.20 branched alkyl, linear fluorinated C.sub.1-C.sub.12 alkyl, CN, C.sub.6-C.sub.20 aryl, and C.sub.2-C.sub.2 heteroaryl; L is selected from substituted or unsubstituted C.sub.2-C.sub.42 heteroaryl, substituted or unsubstituted C.sub.6-C.sub.24 aryl or a polar group selected from (formula (aa)), (formula (bb)) and (formula (cc)), wherein substituents, if present in the respective group L are independently selected from the group consisting of deuterium, N fluorine, C.sub.1-C.sub.20 linear alkyl, C.sub.3-C.sub.20 branched alkyl, C.sub.3-C.sub.20 cyclic alkyl, C.sub.1-C.sub.20 linear alkoxy, C.sub.3-C.sub.20 branched alkoxy, C.sub.1-C.sub.12 linear fluorinated alkyl, C.sub.1-C.sub.12 linear fluorinated alkoxy, C.sub.3-C.sub.12 branched fluorinated cyclic alkyl, C.sub.3-C.sub.12 fluorinated cyclic alkyl, C.sub.3-C.sub.12 fluorinated cycle alkoxy, CN, RCN, C.sub.6-C.sub.20 aryl, C.sub.2-C.sub.20 heteroaryl, OR, SR, (CO)R, (CO)NR.sub.2, SiR.sub.3, (SO)R (SO).sub.2R, (PO)R.sub.2; wherein each R independently selected from C.sub.1-C.sub.20 linear alkyl, C.sub.1-C.sub.20 alkoxy, C.sub.1-C.sub.20 thioalkyl, C.sub.3-C.sub.20 branched alkyl, C.sub.3-C.sub.20 cyclic alkyl, C.sub.3-C.sub.20 branched alkoxy, C.sub.3-C.sub.20 cyclic alkoxy, C.sub.3-C.sub.20 branched thioalkyl, C.sub.3-C.sub.20 cyclic thioalkyl

The present invention includes novel compounds containing heterocycles or azaheterocycles and tetraphenylene or azatetraphenylene, or cyano substituted variants thereof. These compounds may be useful as host materials for phosphorescent electroluminescent devices.

In one aspect, solid-state organic intermediate-band photovoltaic devices are provided. A solid-state organic intermediate-band photovoltaic device, in some embodiments, comprises an organic electron donor and an organic electron acceptor, wherein the organic electron donor comprises a singlet energy level separated from a triplet energy level by an energy gap. The device also comprises a triplet sensitizer comprising singlet and triplet energy levels falling within the singlet-triplet energy gap of the electron donor.