Organic electroluminescence device and electronic apparatus

Patent metadata

Field	Value
Publication number	US-12514115-B2
Application number	US-202017766213-A
Country	US
Kind code	B2
Filing date	Sep 28, 2020
Priority date	Oct 4, 2019
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

An organic electroluminescence device containing a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein the organic layer contains an emitting layer, a first layer, and a second layer, the first layer is disposed between the anode and the emitting layer, the second layer is disposed between the anode and the first layer, the first layer contains a first hole-transporting material and a second hole-transporting material, and the second layer contains an acceptor material having an affinity value in the range of 3.8 to 6.0 eV and at least one hole-transporting material.

First claim

The invention claimed is:

1 . An organic electroluminescence device comprising a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein
the organic layer comprises an emitting layer, a first layer, and a second layer, the first layer is disposed between the anode and the emitting layer, the second layer is disposed between the anode and the first layer, the first layer comprises a first hole-transporting material, and a second hole-transporting material, and the second layer comprises an acceptor material having an affinity value in the range of 3.8 to 6.0 eV, one or more compounds selected from compounds represented by one of the following formulas (11-3B) and (11-3D), and one or more compounds represented by the following formula (11) other than the compound represented by the following formula (11-3B) or (11-3D):

wherein in the formula (11-3B),
L 11B is
a single bond, or
a substituted or unsubstituted arylene group including 6 to 50 ring carbon atoms;
Ar 11B is
a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
a substituted or unsubstituted monovalent heterocyclic group including 5 to 50 ring atoms;
R 11B to R 18B are independently
a hydrogen atom,
a substituted or unsubstituted alkyl group including 1 to 50 carbon atoms,
a substituted or unsubstituted alkenyl group including 2 to 50 carbon atoms,
a substituted or unsubstituted alkynyl group including 2 to 50 carbon atoms,
a substituted or unsubstituted cycloalkyl group including 3 to 50 ring carbon atoms,
—Si(R 901 )(R 902 )(R 903 ),
—O—(R 904 ),
—S—(R 905 ),
—N(R 906 )(R 907 ),
a halogen atom, a cyano group, a nitro group,
a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
a substituted or unsubstituted monovalent heterocyclic group including 5 to 50 ring atoms;
R 901 to R 907 are independently
a hydrogen atom,
a substituted or unsubstituted alkyl group including 1 to 50 carbon atoms,
a substituted or unsubstituted cycloalkyl group including 3 to 50 ring carbon atoms,
a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
a substituted or unsubstituted monovalent heterocyclic group including 5 to 50 ring atoms; when two or more of each of R 901 to R 907 are present, the two or more of each of R 901 to R 907 may be the same as or different from each other;
substituents when L 11B , Ar 11B , and R 11B to R 18B have substituents are independently
a substituted or unsubstituted alkyl group including 1 to 50 carbon atoms,
a substituted or unsubstituted alkenyl group including 2 to 50 carbon atoms,
a substituted or unsubstituted alkynyl group including 2 to 50 carbon atoms,
a substituted or unsubstituted cycloalkyl group including 3 to 50 ring carbon atoms,
—Si(R 901 )(R 902 )(R 903 ),
—O—(R 904 ),
—S—(R 905 ),
a halogen atom, a cyano group, a nitro group,
a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
a substituted or unsubstituted monovalent heterocyclic group including 5 to 50 ring atoms; and
R 901 to R 905 are as defined above;

wherein in the formula (11-3D),
L 11D and L 12D are independently
a single bond, or
a substituted or unsubstituted arylene group including 6 to 50 ring carbon atoms;
Ar 11D to Ar 13D are independently
a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
a substituted or unsubstituted monovalent heterocyclic group including 5 to 50 ring atoms;
R 11D , R 12D , and R 14D to R 18D are independently
a hydrogen atom,
a substituted or unsubstituted alkyl group including 1 to 50 carbon atoms,
a substituted or unsubstituted alkenyl group including 2 to 50 carbon atoms,
a substituted or unsubstituted alkynyl group including 2 to 50 carbon atoms,
a substituted or unsubstituted cycloalkyl group including 3 to 50 ring carbon atoms,
—Si(R 901 )(R 902 )(R 903 ),
—O—(R 904 ),
—S—(R 905 ),
a halogen atom, a cyano group, a nitro group,
a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
a substituted or unsubstituted monovalent heterocyclic group including 5 to 50 ring atoms;
R 901 to R 907 are independently
a hydrogen atom,
a substituted or unsubstituted alkyl group including 1 to 50 carbon atoms,
a substituted or unsubstituted cycloalkyl group including 3 to 50 ring carbon atoms,
a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
a substituted or unsubstituted monovalent heterocyclic group including 5 to 50 ring atoms; when two or more of each of R 901 to R 907 are present, the two or more of each of R 901 to R 907 may be the same as or different from each other;
substituents when L 11D , L 12D , Ar 11D to Ar 13D , R 11D , R 12D , and R 14D to R 18D have substituents are independently
a substituted or unsubstituted alkyl group including 1 to 50 carbon atoms,
a substituted or unsubstituted alkenyl group including 2 to 50 carbon atoms,
a substituted or unsubstituted alkynyl group including 2 to 50 carbon atoms,
a substituted or unsubstituted cycloalkyl group including 3 to 50 ring carbon atoms,
—Si(R 901 )(R 902 )(R 903 ),
—O—(R 904 ),
—S—(R 905 ),
a halogen atom, a cyano group, a nitro group,
a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
a substituted or unsubstituted monovalent heterocyclic group including 5 to 50 ring atoms; and
R 901 to R 905 are as defined above;

wherein in the formula (11),
two of -L 11 -Ar 11 , -L 12 -Ar 12 , and -L 13 -Ar 13 form a substituted or unsubstituted N-carbazolyl group by bonding with each other, or do not form the N-carbazolyl group;
L 11 to L 13 which are not involved in formation of the N-carbazolyl group are independently a single bond or a linking group;
Ar 11 to Ar 13 which are not involved in formation of the N-carbazolyl group are independently
a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms,
a substituted or unsubstituted monovalent heterocyclic group including 5 to 60 ring atoms, or
—N(R 906 )(R 907 );
R 906 and R 907 are independently
a hydrogen atom,
a substituted or unsubstituted alkyl group including 1 to 50 carbon atoms,
a substituted or unsubstituted cycloalkyl group including 3 to 50 ring carbon atoms,
a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
a substituted or unsubstituted monovalent heterocyclic group including 5 to 50 ring atoms; when two or more of each of R 906 and R 907 are present, the two or more of each of R 906 and R 907 may be the same as or different from each other.

2 . The organic electroluminescence device according to claim 1 , wherein the acceptor material is one or more compounds selected from the group con

Assignees

• Idemitsu Kosan Co

Inventors

• Haketa Tasuku
• Nishimura Kazuki

Classifications

• H10K50/00

  Organic light-emitting devices (integrated devices or assemblies of multiple devices H10K59/00, H10K65/00; organic semiconductor lasers H01S5/36) · CPC title

• H10K85/6572

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

• H10K85/626

  containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene · CPC title

• H10K50/156

  comprising a multilayered structure · CPC title

• H10K85/615

  Polycyclic condensed aromatic hydrocarbons, e.g. anthracene · CPC title