An organic EL device with high emission efficiency, an electronic equipment including the organic EL device, and a compound providing the organic EL device are provided. The compound is represented by formula (1): ##STR00001##
wherein Ar.sup.1 represents a substituted or unsubstituted naphthalene ring; the substituent on the naphthalene ring is at least one selected from a fluorine atom, a cyano group, an alkyl group, a cycloalkyl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, a group represented by Si(R.sub.101)(R.sub.102)(R.sub.103), and a group represented by ZR.sup.a; R.sup.1 and R.sup.2 each independently represent a hydrogen atom, an alkyl group, a cycloalkyl group, a group represented by Si(R.sub.101)(R.sub.102)(R.sub.103), an aryl group, or a heteroaryl group; R.sup.11 to R.sup.18 each independently represent a hydrogen atom, a fluorine atom, a cyano group, an alkyl group, a cycloalkyl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, a group represented by Si(R.sub.101)(R.sub.102)(R.sub.103), or a group represented by ZR.sup.a; each Z represents a single bond, an arylene group, a heteroarylene group, or a divalent linking group in which 2 to 4 groups selected from the above groups are linked together; R.sup.a represents a group represented by N(R.sub.104)(R.sub.105), an aryl group, or a heteroaryl group; and R.sub.101 to R.sub.105 each represent a hydrogen atom, an alkyl group, a cycloalkyl group, aryl group, or a heteroaryl group; provided that at least one selected from the substituent on the naphthalene ring and R.sup.11 to R.sup.18 represents a group represented by ZR.sup.a.

An organic electroluminescent element including a luminescent compound represented by the following formula (in which R.sup.1 to R.sup.14 each independently represent a hydrogen atom, a deuterium atom, an alkyl group, an aryl group, a heteroaryl group, a fluorine atom, a cyano group, an amino group, an alkoxy group, an aryloxy group, a thio group, or a silyl group, and 8 to 13 groups out of R.sup.1 to R.sup.14 each represent a hydrogen atom or a deuterium atom) in a light emitting layer has high durability and excellent chromaticity.

##STR00001##

Provided are: an aromatic amine derivative in which a terminal substituent such as a dibenzofuran ring or a dibenzothiophene ring is bonded to a nitrogen atom directly or through an arylene group or the like; an organic electroluminescence device including an organic thin film layer formed of one or more layers including a light emitting layer and interposed between a cathode and an anode in which a layer of the organic thin film layer contains the aromatic amine derivative by itself or as a component of a mixture, and the device has a long lifetime and high luminous efficiency; and an aromatic amine derivative for realizing the device.

The present invention generally discloses an organic compound and organic electroluminescence (herein referred to as organic EL) device using the organic compound. More specifically, the present invention relates to an organic EL device employing the organic compound as fluorescent emitting host or phosphorescent emitting host which can display long lifetime, high efficiency.

Provided are: an aromatic amine derivative in which a terminal substituent such as a dibenzofuran ring or a dibenzothiophene ring is bonded to a nitrogen atom directly or through an arylene group or the like; an organic electroluminescence device including an organic thin film layer formed of one or more layers including a light emitting layer and interposed between a cathode and an anode in which a layer of the organic thin film layer contains the aromatic amine derivative by itself or as a component of a mixture, and the device has a long lifetime and high luminous efficiency; and an aromatic amine derivative for realizing the device.

The present disclosure relates to ?-substituted perylene diimide (PDI) derivatives as small molecular and polymerized electron acceptors in organic photovoltaic cells.

An organic light-emitting device includes an emission layer and an electron transport layer. The emission layer includes at least one compound represented one of Formula 1, Formula 2 and/or Formula 3. The electron transport layer includes at least one compound represented by Formula 4 and/or Formula 5. An organic light-emitting device including the emission layer and the electron transport layer has high emission efficiency and an improved lifetime.

##STR00001##

A fused aromatic derivative shown by the following formula (1): ##STR00001##
wherein R.sub.a and R.sub.b are independently a hydrogen atom or a substituent, p is an integer of 1 to 8 and q is an integer of 1 to 11, and when p and q are two or more, R.sub.as and R.sub.bs may be independently the same or different, and adjacent substituents R.sub.as may form a ring, L.sub.1 is a single bond or a substituted or unsubstituted divalent linking group, and Ar.sub.1 is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 5 to 50 ring atoms, provided that when L.sub.1 is a single bond and at least one of R.sub.as is not a hydrogen atom, Ar.sub.1 is not a triphenylenyl group, and provided that substituents of L.sub.1 and Ar.sub.1, and R.sub.a and R.sub.b contain no amino group.

An aromatic amine derivative is represented by a formula (1) below. In the formula (1), R.sub.2 to R.sub.5, R.sub.7 to R.sub.9 and R.sub.10 are each independently a hydrogen atom or a substituent. In the formula (1), R.sub.1 and R.sub.6 are represented by a formula (2) below, and L.sub.1 to L.sub.3 are each independently a single bond and the like. In the formula (2), Ar.sub.1 is a monovalent residue derived from the ring structure represented by a formula (4) below, X is an oxygen atom or a sulfur atom, and at least one of R.sub.11 to R.sub.18 is an alkyl group. In the formula (1), Ar.sub.2 represents a substituted or unsubstituted biphenyl group.

##STR00001##

An organic light-emitting device includes: a first electrode, a second electrode facing the first electrode, and an organic layer between the first electrode and the second electrode, the organic layer including: an emission layer, an electron transport region between the second electrode and the emission layer, and a mixed layer between the emission layer and the electron transport region, the mixed layer including a first material and a second material, the first material and the second material being selected from a pyrrolidine-based compound and a C.sub.10-C.sub.30 polycyclicaromatic hydrocarbon-based compound, and a triplet energy Eg.sub.T1 of at least one selected from the first material and the second material being 2.2 eV or greater.