Disclosed is a highly efficient organic light-emitting device that uses an anthracene derivative having a characteristic structure as a host compound in a light-emitting layer of the organic light-emitting device and includes a capping layer formed using a compound having a characteristic structure in the organic light-emitting device.

Disclosed is a highly efficient organic light-emitting device that uses an anthracene derivative having a characteristic structure as a host compound in a light-emitting layer of the organic light-emitting device and includes a capping layer formed using a compound having a characteristic structure in the organic light-emitting device.

Disclosed is an organic light-emitting device with high efficiency and long lifespan that uses an anthracene derivative having a characteristic structure as a host compound in a light-emitting layer of the organic light-emitting device and uses a compound having a characteristic structure as a compound for an electron transport layer.

Disclosed is an organic light-emitting device with high efficiency and long lifespan that uses an anthracene derivative having a characteristic structure as a host compound in a light-emitting layer of the organic light-emitting device and uses a compound having a characteristic structure as a compound for an electron transport layer.

An organic electroluminescence device includes: an anode; a cathode opposite the anode; and an organic layer interposed between the anode and the cathode, in which the organic layer includes: an emitting layer; and a first electron transporting layer and a second electron transporting layer which are provided on a side of the emitting layer near the cathode. The first electron transporting layer includes a compound represented by a formula (1) below, and the second electron transporting layer includes a compound represented by a formula (2) below.

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An organic electroluminescence device includes: an anode; a cathode opposite the anode; and an organic layer interposed between the anode and the cathode, in which the organic layer includes: an emitting layer; and a first electron transporting layer and a second electron transporting layer which are provided on a side of the emitting layer near the cathode. The first electron transporting layer includes a compound represented by a formula (1) below, and the second electron transporting layer includes a compound represented by a formula (2) below.

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The invention relates to benzimidazole derivatives which are suitable for use in electronic devices, and to electronic devices, in particular organic electroluminescent devices, containing said compounds.

An aromatic heterocyclic derivative is represented by a formula (1) below. ##STR00001##
In the formula (1), X.sub.1 to X.sub.3 each are a nitrogen atom or CR.sub.1, with a proviso that at least one of X.sub.1 to X.sub.3 is a nitrogen atom. A is represented by a formula (2) and B is represented by a formula (4) below. ##STR00002##

An aromatic heterocyclic derivative is represented by a formula (1) below. ##STR00001##
In the formula (1), X.sub.1 to X.sub.3 each are a nitrogen atom or CR.sub.1, with a proviso that at least one of X.sub.1 to X.sub.3 is a nitrogen atom. A is represented by a formula (2) and B is represented by a formula (4) below. ##STR00002##

Provided are compounds comprising at least four six-membered rings wherein two atoms of each of these four six-membered rings are connected to form an at least eight membered ring and a further ligand which is connected to the at least eight-membered ring via a linker. Also provided are formulations comprising these compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these compounds.