Heterocyclic compound, organic light-emitting element comprising same, and composition for organic layer of organic light-emitting element

Patent metadata

Field	Value
Publication number	US-2025255088-A1
Application number	US-202519187890-A
Country	US
Kind code	A1
Filing date	Apr 23, 2025
Priority date	Nov 10, 2022
Publication date	Aug 7, 2025
Grant date	—

Abstract

Provided is a heterocyclic compound, an organic light emitting device including the same, and a composition for an organic material layer of the organic light emitting device. The heterocyclic compound may be used as a material for the organic material layer of the organic light emitting device. That is, the heterocyclic compound can serve as a light emitting material, a hole injection material, a hole transport material, an electron transport material, an electron injection material and the like in the organic light emitting device. In particular, the heterocyclic compound can be used as a material for a charge generation layer and an electron transport layer of an organic light emitting device.

First claim

1 . A heterocyclic compound represented by the following Chemical Formula 1:

wherein, in Chemical Formula 1,
X is O or S,
Ar1 is a substituted or unsubstituted C6 to C60 aryl group,
Ar2 is a C6 to C60 aryl group substituted with at least one deuterium,
R1, R2, Ra, and Rb are the same as or different from each other, and are each independently hydrogen; deuterium; a halogen group; a cyano group; a substituted or unsubstituted C1 to C60 alkyl group; a substituted or unsubstituted C6 to C60 aryl group; or a substituted or unsubstituted C2 to C60 heteroaryl group,
a1 is an integer from 0 to 3, and when a1 is 2 or higher, substituents in the parenthesis are the same as or different from each other,
a2 is an integer from 0 to 3, and when a2 is 2 or higher, substituents in the parenthesis are the same as or different from each other,
m is an integer from 0 to 7, and when m is 2 or higher, substituents in the parenthesis are the same as or different from each other,
n is an integer from 0 to 7, and when n is 2 or higher, substituents in the parenthesis are the same as or different from each other, and
a deuterium substitution rate of

of Chemical Formula 1 is 60% to 100%.

2 . The heterocyclic compound of claim 1 , wherein Chemical Formula 1 is represented by the following Structural Formulae A to C:

in Structural Formulae A to C,
the definitions of X, Ar1, Ar2, R1, R2, Ra, Rb, a1, a2, m, and n are the same as the definitions in Chemical Formula 1,
the deuterium substitution rate of a structure in which Structural Formula A and Structural Formula C are combined is 60% to 100%, and
the

is a position where Structural Formula A and Structural Formula B are linked, and the

is a position where Structural Formula A and Structural Formula C are linked.

3 . The heterocyclic compound of claim 2 , wherein a deuterium substitution rate of Structural Formula B is 0%.

4 . The heterocyclic compound of claim 2 , wherein a deuterium substitution rate of a structure in which Structural Formula A and Structural Formula C are combined is 80% to 100%.

5 . The heterocyclic compound of claim 1 , wherein Ar1 is a C6 to C20 aryl group.

6 . The heterocyclic compound of claim 1 , wherein Ar2 is a C6 to C20 aryl group substituted with at least one deuterium.

7 . The heterocyclic compound of claim 1 , wherein R1, R2, Ra, and Rb are the same as or different from each other, and are each independently hydrogen; or deuterium.

8 . The heterocyclic compound of claim 1 , wherein Chemical Formula 1 is represented by any one of the following compounds:

9 . An organic light emitting device comprising:
a first electrode; a second electrode provided to face the first electrode; and an organic material layer having one or more layers provided between the first electrode and the second electrode, wherein one or more layers of the organic material layer comprise the het

Assignees

• Lt Materials Co Ltd

Inventors

• Choi Eui-Jeong
• Lee Hyun-Joo
• Seo Young-Beom
• No Young-Seok
• Kim Dong-Jun
• Choi Dae-Hyuk

Classifications

• H10K2101/10

  Triplet emission · CPC title

• H10K50/16

  Electron transporting layers · CPC title

• H10K85/6572

  comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole · CPC title

• H10K85/6574

  comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes · CPC title

• H10K50/17

  Carrier injection layers · CPC title