Organic light-emitting device

1. An organic light-emitting device, comprising:

a first electrode;

a second electrode; and

an organic layer between the first electrode and the second electrode,

wherein the organic layer includes at least one first material and at least one second material, the first material being represented by one of Formulae 1-1 and 1-2, below, and the second material being represented by Formula 2, below:

(A 21 ) n21 -(A 22 ) n22 -(A 23 ) n23 -(A 24 ) n24   <Formula 2>

in Formulae 1-1, 1-2, and 2,

A 11 to A 14 are each independently selected from groups represented by the following Formulae 9-1 to 9-12;

in Formulae 1-1, 1-2, 2, and 9-1 to 9-12,

two adjacent ones of X 11 to X 18 are each independently a carbon atom corresponding to * in Formulae 9-1 to 9-12;

L 11 to L 13 are each independently selected from a substituted or unsubstituted C 6 -C 60 arylene group, a substituted or unsubstituted C 1 -C 60 heteroarylene group, a substituted or unsubstituted divalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted divalent non-aromatic condensed heteropolycyclic group;

a11 to a13 are each independently 0 or 1;

R 11 and R 12 are each independently selected from a substituted or unsubstituted C 6 -C 60 aryl group, a substituted or unsubstituted C 1 -C 60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group;

Y 11 and A 21 to A 24 are each independently selected from a substituted or unsubstituted C 6 -C 60 aryl and a substituted or unsubstituted C 1 -C 60 heteroaryl; at least one selected from A 21 to A 24 being a substituted or unsubstituted C 1 -C 60 heteroaryl containing a nitrogen atom;

n11 is selected from 1, 2, and 3;

n21 to n24 are each independently selected from 0, 1, 2, and 3;

the sum of n21, n22, n23, and n24 is 4 or more;

X 91 is selected from an oxygen atom, a sulfur atom, C(Q 1 )(Q 2 ), and N(Q 1 );

R 91 to R 93 are each independently selected from a hydrogen, a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a substituted or unsubstituted C 1 -C 60 alkyl group, a substituted or unsubstituted C 2 -C 60 alkenyl group, a substituted or unsubstituted C 2 -C 60 alkynyl group, a substituted or unsubstituted C 1 -C 60 alkoxy group, a substituted or unsubstituted C 3 -C 10 cycloalkyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkyl group, a substituted or unsubstituted C 3 -C 10 cycloalkenyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkenyl group, a substituted or unsubstituted C 6 -C 60 aryl group, a substituted or unsubstituted C 6 -C 60 aryloxy group, a substituted or unsubstituted C 6 -C 60 arylthiogroup, a substituted or unsubstituted C 1 -C 60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group;

b91 and b93 are each independently selected from 1, 2, 3, and 4;

b92 and b94 are each independently 1 or 2;

b95 is selected from 1, 2, 3, 4, 5, and 6; and

at least one of substituents of the substituted C 6 -C 60 arylene group, the substituted C 1 -C 60 heteroarylene group, the substituted divalent non-aromatic condensed polycyclic group, the substituted divalent non-aromatic condensed heteropolycyclic group, the substituted C 6 -C 60 aryl group, the substituted C 1 -C 60 heteroaryl group, the substituted monovalent non-aromatic condensed polycyclic group, the substituted monovalent non-aromatic condensed heteropolycyclic group, substituted C 1 -C 60 alkyl group, the substituted C 2 -C 60 alkenyl group, the substituted C 2 -C 60 alkynyl group, the substituted C 1 -C 60 alkoxy group, the substituted C 3 -C 10 cycloalkyl group, the substituted C 1 -C 10 heterocycloalkyl group, the substituted C 3 -C 10 cycloalkenyl group, the substituted C 1 -C 10 heterocycloalkenyl group, the substituted C 6 -C 60 aryloxy group, the substituted C 6 -C 60 arylthio group, the substituted C 6 -C 60 aryl, and substituted C 1 -C 60 heteroaryl is selected from:

a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C 1 -C 60 alkyl group, a C 2 -C 60 alkenyl group, a C 2 -C 60 alkynyl group, and a C 1 -C 60 alkoxy group;

a C 1 -C 60 alkyl group, a C 2 -C 60 alkenyl group, a C 2 -C 60 alkynyl group, and a C 1 -C 60 alkoxy group, each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 1 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 1 -C 60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed hetero-polycyclic group, and —Si(Q 11 )(Q 12 )(Q 13 );

a C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 1 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 1 -C 60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic heterocondensed polycyclic group;

a C 3 -C 10 cycloalkyl group, a C 2 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 2 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 1 -C 60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group, each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C 1 -C 60 alkyl group, a C 1 -C 60 alkenyl group, a C 1 -C 60 alkynyl group, a C 1 -C 60 alkoxy group, a C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 1 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 1 -C 60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed hetero-polycyclic group, and —Si(Q 21 )(Q 22 )(Q 23 ); and

—Si(Q 31 )(Q 32 )(Q 33 ),

wherein Q 1 , Q 2 , Q 11 to Q 13 , Q 21 to Q 23 , and Q 31 to Q 33 are each independently selected from a C 1 -C 60 alkyl group, a C 6 -C 60 aryl group, a C 1 -C 60 ) heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group.

2. The organic light-emitting device as claimed in claim 1 , wherein L 11 to L 13 are each independently selected from:

a phenylene group, a naphthylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a quinolinylene group, an isoquinolinylene group, a triazinylene group, a carbazolylene group, a dibenzofuranylene group, and a dibenzothiophenylene group; and

a phenylene group, a naphthylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a quinolinylene group, an isoquinolinylene group, a carbazolylene group, a dibenzofuranylene group, and a dibenzothiophenylene group, each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C 1 -C 20 alkyl group, a phenyl group, and a naphthyl group.

3. The organic light-emitting device as claimed in claim 1 , wherein L 11 to L 13 are each independently selected from a phenylene group, a naphthylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a quinolinylene group, an isoquinolinylene group, a triazinylene group, a carbazolylene group, a dibenzofuranylene group, and a dibenzothiophenylene group.

4. The organic light-emitting device as claimed in claim 1 , wherein R 11 and R 12 are each independently selected from:

a phenyl group, a naphthyl group, a pyridinyl group, a pyrimidinyl group, a quinolinyl group, an isoquinolinyl group, a quinazolinyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a pyridinyl group, a pyrimidinyl group, a quinolinyl group, an isoquinolinyl group, a quinazolinyl group, and a triazinyl group, each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, a methyl group, a phenyl group, and a naphthyl group.

5. The organic light-emitting device as claimed in claim 1 , wherein R 11 and R 12 are each independently a group represented by one of Formulae 4-31 to 4-38 below:

wherein, in Formulae 4-31 to 4-38,

Z 1 is a hydrogen, a deuterium, —F, —Cl, —Br, —I, a methyl group, a phenyl group, or a naphthyl group;

d1 is selected from 1, 2, 3, 4, and 5; and

d2 is selected from 1, 2, 3, 4, 5, 6, and 7;

d3 is selected from 1, 2, 3, and 4;

d4 is selected from 1, 2, and 3;

d5 is selected from 1, 2, 3, 4, 5, and 6;

d6 is selected from 1 and 2; and

* indicates a binding site to a neighboring atom.

6. The organic light-emitting device as claimed in claim 1 , wherein R 11 and R 12 are each independently a group represented by one of Formulae 5-31 to 5-37 below:

wherein, in Formulae 5-31 to 5-37, * indicates a binding site to a neighboring atom.

7. The organic light-emitting device as claimed in claim 1 , wherein Y 11 is selected from:

a benzene group, a naphthalene group, a pyridine group, a pyrimidine group, a quinoline group, an isoquinoline group, a quinazoline group, and a triazine group; and

a benzene group, a naphthalene group, a pyridine group, a pyrimidine group, a quinoline group, an isoquinoline group, a quinazoline group, and a triazine group, each substituted with at least one selected from a phenyl group and a naphthyl group.

8. The organic light-emitting device as claimed in claim 1 , wherein Y 11 is a triazine group substituted with at least one selected from a benzene group and a phenyl group.

9. The organic light-emitting device as claimed in claim 1 , wherein:

A 21 to A 24 are each independently selected from:

a benzene, a naphthalene, a pyridine, a pyrimidine, a quinoline, an isoquinoline, a quinazoline, and a triazine;

a benzene, a naphthalene, a pyridine, a pyrimidine, a quinoline, an isoquinoline, a quinazoline, and a triazine, each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C 1 -C 20 alkyl group, a phenyl group, a naphthyl group, a pyridyl group, a pyrimidyl group, and a triazinyl group; and

a benzene, a naphthalene, a pyridine, a pyrimidine, a quinoline, an isoquinoline, a quinazoline, and a triazine, each substituted with at least one selected from a phenyl group, a naphthyl group, a pyridyl group, a pyrimidyl group, and a triazinyl group, which are each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C 1 -C 20 alkyl group, a phenyl group, a naphthyl group, a pyridyl group, a pyrimidyl group, and a triazinyl group; and

at least one of A 21 to A 24 is selected from:

a pyridine, a pyrimidine, a quinoline, an isoquinoline, a quinazoline, and a triazine;

a pyridine, a pyrimidine, a quinoline, an isoquinoline, a quinazoline, and a triazine, each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C 1 -C 20 alkyl group, a phenyl group, a naphthyl group, a pyridyl group, a pyrimidyl group, and a triazinyl group;

a pyridine, a pyrimidine, a quinoline, an isoquinoline, a quinazoline, and a triazine, each substituted with at least one selected from a phenyl group, a naphthyl group, a pyridyl group, a pyrimidyl group, and a triazinyl group, each substituted with at least one selected from a pyridyl group, a pyrimidyl group, and a triazinyl group; and

a pyridine, a pyrimidine, a quinoline, an isoquinoline, a quinazoline, and a triazine, each substituted with at least one selected from a pyridyl group, a pyrimidyl group, and a triazinyl group, which are each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C 1 -C 20 alkyl group, a phenyl group, a naphthyl group, a pyridyl group, a pyrimidyl group, and a triazinyl group.

10. The organic light-emitting device as claimed in claim 1 , wherein:

A 21 to A 24 are each independently selected from:

a benzene, a pyridine, a pyrimidine, a quinoline, an isoquinoline, a quinazoline, and a triazine; and

a benzene, a pyridine, a pyrimidine, a quinoline, an isoquinoline, a quinazoline, and a triazine, each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, an iso-butyl group, a sec-butyl group, a tert-butyl group, a phenyl group, and a pyridyl group; and

at least of A 21 to A 24 is selected from:

a pyridine, a pyrimidine, a quinoline, an isoquinoline, a quinazoline, and a triazine; and

a pyridine, a pyrimidine, a quinoline, an isoquinoline, a quinazoline, and a triazine, each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, an iso-butyl group, a sec-butyl group, a tert-butyl group, a phenyl group, and a pyridyl group.

11. The organic light-emitting device as claimed in claim 1 , wherein:

A 21 to A 24 are each independently selected from:

a benzene, a pyridine, a pyrimidine, a quinoline, an isoquinoline, a quinazoline, and a triazine; and

a benzene, a pyridine, a pyrimidine, a quinoline, an isoquinoline, a quinazoline, and a triazine, each substituted with at least one selected from a cyano group, a methyl group, a phenyl group, and a pyridyl group; and

at least one of A 21 to A 24 is selected from:

a pyridine, a pyrimidine, a quinoline, an isoquinoline, a quinazoline, and a triazine; and

a pyridine, a pyrimidine, a quinoline, an isoquinoline, a quinazoline, and a triazine, each substituted with at least one selected from a cyano group, a methyl group, a phenyl group, and a pyridyl group.

12. The organic light-emitting device as claimed in claim 1 , wherein n11 is 1 or 3.

13. The organic light-emitting device as claimed in claim 1 , wherein:

n21 to n24 are each independently 1 or 2; and

a sum of n21, n22, n23, and n24 is selected from 4, 5, 6, and 7.

14. The organic light-emitting device as claimed in claim 1 , wherein:

the first material is a compound represented by one of Formulae 1-1A, 1-1B, 1-1C, and 1-2 A, and

the second material is a compound represented by one of Formulae 2A and 2B:

wherein in Formulae 1-1A, 1-1B, 1-1C, 1-2A, 2A, and 2B,

Y 11 , L 11 , L 12 , a11, a12, R 11 , and R 12 are the same as defined in Formulae 1-1 and 1-2;

Q 1 , R 91 , R 93 , b91, b92, and b93 are the same as defined in Formulae 9-1 to 9-12;

L 13 is the same as defined in connection with L 11 in Formula 1-1;

a13is the same as defined in connection with a13 in Formula 1-1;

X 21 is CR 21 or N;

X 22 is CR 22 or N;

X 23 is CR 23 or N;

L 21 to L 24 are each independently selected from:

a phenylene group, a naphthalenyl group, a pyridinylene group, a pyrimidinylene group, and a triazinylene group;

a phenylene group, a naphthalenyl group, a pyridinylene group, a pyrimidinylene group, and a triazinylene group, each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C 1 -C 20 alkyl group, a phenyl group, a naphthyl group, a pyridyl group, a pyrimidyl group, and a triazinyl group; and

a phenylene group, a naphthalenyl group, a pyridinylene group, a pyrimidinylene group, and a triazinylene group, each substituted with at least one selected from a phenyl group, a naphthyl group, a pyridyl group, a pyrimidyl group, and a triazinyl group, which are each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C 1 -C 20 alkyl group, a phenyl group, a naphthyl group, a pyridyl group, a pyrimidyl group, and a triazinyl group;

a21 to a24 are each independently 0 or 1;

R 21 to R 27 are each independently selected from:

a deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C 1 -C 20 alkyl group, a phenyl group, a naphthyl group, a pyridyl group, a pyrimidyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a pyridyl group, a pyrimidyl group, and a triazinyl group, each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C 1 -C 20 alkyl group, a phenyl group, a naphthyl group, a pyridyl group, a pyrimidyl group, and a triazinyl group.

15. The organic light-emitting device as claimed in claim 1 , wherein:

the first material includes a compound represented by the following Formula 1-1B, and

the second material includes a compound represented by any one of the following Formulae 2A-1 to 2A-5 and 2B-1 to 2B-5:

wherein, in Formulae 1-1B, 2A-1 to 2A-5, and 2B-1 to 2B-5,

Y 11 , L 11 , and a11 are the same as defined in Formula 1-1;

Q 1 , R 91 , R 93 , b91, and b93 are the same as defined in Formulae 9-1 to 9-12; and

L 21 to L 24 , a21 to a24, and R 21 to R 27 are the same as defined in Formulae 2A and 2B.

16. The organic light-emitting device as claimed in claim 1 , wherein:

the first material is selected from Compounds 1 to 173, below; and

the second material is selected from Compounds 201 to 304, below:

17. The organic light-emitting device as claimed in claim 1 , wherein:

the organic layer includes an emission layer and an electron transport region between the second electrode and the emission layer, the electron transport region including an electron transport layer,

the emission layer includes at least one first material, and

the electron transport layer includes at least one second material.

18. The organic light-emitting device as claimed in claim 17 , wherein the emission layer is adjacent to the electron transport layer.

19. The organic light-emitting device as claimed in claim 1 , wherein:

the organic layer includes an emission layer and an electron transport region between the second electrode and the emission layer, the electron transport region including an electron transport layer and a buffer layer,

the buffer layer includes at least one first material, and

the electron transport layer includes at least one second material.

20. The organic light-emitting device as claimed in claim 19 , wherein the buffer layer is adjacent to the electron transport layer.