The present specification relates to a compound represented by Chemical Formula 1, a composition for forming an optical film and an optical film comprising the same, and a display device comprising the optical film.

The device provided herein is an organic electroluminescent device and includes a substrate; a first electrode on the substrate and with high reflectivity; a translucent or transparent second electrode over the first electrode; and a first, a second and a third organic layer included between the first and the second electrode; where the second organic layer has a thickness >80 nm and is made of a second organic material; the third organic layer is a light-emitting layer including at least one light-emitting material and at least one host material; the first organic layer has a conductivity >1×10.sup.−4 S/m and <1×10.sup.−2 S/m; an energy level difference between HOMO energy level of the second organic material and HOMO energy level of the at least one host material is <0.27 eV; and the first electrode and the second organic layer are in direct contact with the first organic layer.

An organic photoelectronic device includes a first electrode and a second electrode facing each other and a light-absorption layer between the first electrode and the second electrode and including a photoelectric conversion region including a p-type light-absorbing material and an n-type light-absorbing material and a doped region including an exciton quencher and at least one of the p-type light-absorbing material and the n-type light-absorbing material, wherein at least one of the p-type light-absorbing material and the n-type light-absorbing material selectively absorbs a part of visible light, and an image sensor includes the same.

The present specification provides a heterocyclic compound represented by Chemical Formula 1, an organic light emitting device comprising the same, a composition for an organic material layer of an organic light emitting device, and a method for manufacturing an organic light emitting device.

The present disclosure provides for an organic electroluminescent device (OLED) including an anode; a cathode; and an emissive layer, disposed between the anode and the cathode. The emissive layer includes a phosphorescent dopant, a first host, and a second host, wherein the first host transports holes, the second host transports electrons, and the first host is fully or partially deuterated. Consumer products that include the OLED are also provided.

Provided is the nitrogen-containing compound shown in Chemical formula 1, an organic electroluminescent device, and an electronic apparatus, relating to the technical field of organic materials. The nitrogen-containing compound can improve the performance of the organic electroluminescent device.

##STR00001##

A compound is represented by a formula (1) below. D is a group represented by a formula (11), (12) or (13) below; at least one D is a group represented by the formula (12) or (13); at least one R is a substituent; and a sum of the number of R serving as a substituent and the number of a group represented by the formula (12) or (13) is 3 or 4.

##STR00001##

Provided is a compound of Formula 1:

##STR00001## wherein: X and Y are independently O, S, or CZ1Z2; Ring A is a benzene or naphthalene ring; A1 to A4 are independently hydrogen, deuterium, a halogen group, a cyano group, a nitro group, a hydroxyl group, or a substituted or unsubstituted: alkyl, cycloalkyl, aryl, or heterocyclic group; R1 to R6, Z1, and Z2 are independently a substituted or unsubstituted: alkyl, aryl, or heterocyclic group; n1 to n3, m, and l are 0 or 1 and n1+n2+n3 is ≥2; a1 and a2 are 1 to 4; a3 is 1 to 3; a4 is 1 to 6; and when a1 to a4 are each 2 or higher, structures in the parenthesis are the same or different, provided that when Ring A is naphthalene, m is 0, and when l is 1, Ring A is a benzene ring,
and an organic light-emitting device comprising the compound.

An organic compound is disclosed comprising: a first chemical moiety with a structure of formula I

##STR00001##

and two second chemical moieties, independently from another with a structure of formula II,

##STR00002##

wherein the first chemical moiety is linked to each of the two second chemical moieties via a single bond.

An organic electroluminescence device includes an anode, a cathode, a first emitting layer, and a second emitting layer provided between the first emitting layer and the cathode, in which the first emitting layer includes, as a first host material, a first compound that includes at least one group represented by a formula (11) below, the first compound being represented by a formula (1) below, the second emitting layer includes a second compound represented by a formula (2) below as a second host material, and the first emitting layer is in direct contact with the second emitting layer. L.sub.101 is a single bond or a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms. Ar.sub.101 is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms. mx is 0, 1, 2, 3, 4, or 5.

##STR00001##