Organic light-emitting devices

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, and comprising an emission layer,

wherein the emission layer comprises at least one light-emitting material represented by Formula 1 or Formula 2, and

wherein the organic layer further comprises at least one hole-transporting material represented by Formula 2(1) or Formula 2(2),

wherein, in Formulas 1 and 2,

A 1 is CR 1 or N; A 2 is CR 2 or N; A 3 is CR 3 or N; A 4 is CR 4 or N; A 5 is CR 5 or N; A 6 is CR 6 or N; is CR 7 or N; A 8 is CR 8 or N; A 9 is CR 9 or N; A 10 is CR 10 or N; A 11 is CR 11 or N; A 12 is CR 12 or N; A 13 is CR 13 or N; A 14 is CR 14 or N; A 15 is CR 15 or N; and A 16 is CR 16 or N;

R 1 to R 16 are each independently selected from a hydrogen atom, a deuterium atom, a halogen atom, a C 1 -C 60 alkyl group, a C 6 -C 60 aryl group, a C 1 -C 60 heteroaryl group, and —N(Q 1 )(Q 2 )(Q 3 ), Q 1 to Q 3 each independently being a C 1 -C 60 alkyl group, a C 6 -C 60 aryl group, or a C 1 -C 60 heteroaryl group;

two or more of R 1 to R 16 optionally combine to form a C 6 -C 20 saturated ring or a C 6 -C 20 unsaturated ring;

Y is O, S, or C(R 31 )(R 32 );

L 1 to L 3 are each independently selected from a substituted or unsubstituted C 3 -C 10 cycloalkylene group, a substituted or unsubstituted C 3 -C 10 cycloalkenylene group, a substituted or unsubstituted C 6 -C 60 arylene group, a substituted or unsubstituted C 2 -C 10 heterocycloalkylene group, a substituted or unsubstituted C 2 -C 10 heterocycloalkenylene group, and a substituted or unsubstituted C 1 -C 60 heteroarylene group;

n1 to n3 are each independently an integer of 0 to 3;

Ar 1 to Ar 3 are each independently selected from:

i) a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 1 -C 60 heteroaryl group, and —Si(Q 1 )(Q 2 )(Q 3 ), Q 1 to Q 3 each independently being a substituted or unsubstituted C 1 -C 10 alkyl group or a substituted or unsubstituted C 6 -C 30 aryl group; and

ii) a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, and a C 1 -C 60 heteroaryl group substituted with at least one substituent selected from a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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, a C 1 -C 60 alkoxy group, a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -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, and —Si(Q 1 )(Q 2 )(Q 3 ), Q 1 to Q 3 each independently being a substituted or unsubstituted C 1 -C 10 alkyl group or a substituted or unsubstituted C 6 -C 30 aryl group;

Z 1 to Z 4 , R 31 , and R 32 are each independently selected from:

i) a hydrogen atom, a deuterium atom, 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;

ii) 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 substituted with at least one substituent selected from a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl group or a salt thereof, a sulfonic acid group or a salt thereof, and a phosphoric acid group or a salt thereof, a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -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, and a C 1 -C 60 heteroaryl group;

iii) a C 3 -C 10 cycloalkyl group, C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, and a C 1 -C 60 heteroaryl group; and

iv) a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, and a C 1 -C 60 heteroaryl group substituted with at least one substituent selected from a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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, a C 1 -C 60 alkoxy group, a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -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, and a C 1 -C 60 heteroaryl group;

o1 to o4 are each independently an integer from 0 to 3;

wherein, in Formulas 2(1) and 2(2),

X 11 is CR 11 or N; X 12 is CR 12 or N; X 13 is CR 13 or N; X 14 is CR 14 or N; X 15 is CR 15 or N; X 16 is CR 16 or N; X 17 is CR 17 or N; X 18 is CR 18 or N; X 19 is CR 19 or N; X 20 is CR 20 or N; X 21 is CR 21 or N; X 22 is CR 22 or N; X 23 is CR 23 or N; and X 24 is CR 24 or N;

Z 5 , Z 6 , and R 11 to R 24 are each independently selected from:

i) a hydrogen atom, a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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;

ii) 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 substituted with at least one substituent selected from a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -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, and a C 1 -C 60 heteroaryl group;

iii) a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, and a C 1 -C 60 heteroaryl group;

iv) a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, and a C 1 -C 60 heteroaryl group substituted with at least one substituent selected from a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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, a C 1 -C 60 alkoxy group, a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -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, and a C 1 -C 60 heteroaryl group; and

v) —N(Q 11 )(Q 12 ), —Si(Q 13 )(Q 14 )(Q 15 ), and —B(Q 16 )(Q 17 ), Q 11 to Q 17 each independently being a C 1 -C 60 alkyl group, a C 1 -C 60 alkoxy group, a C 6 -C 60 aryl group, or a C 1 -C 60 heteroaryl group;

Ar 13 and Ar 14 are each independently selected from:

i) a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, and a C 1 -C 60 heteroaryl group; and

ii) a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, and a C 1 -C 60 heteroaryl group substituted with at least one substituent selected from a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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, a C 1 -C 60 alkoxy group, a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -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, and a C 1 -C 60 heteroaryl group;

Z 11 and Z 12 are each independently selected from:

i) 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;

ii) 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 substituted with at least one substituent selected from a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -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, and a C 1 -C 60 heteroaryl group;

iii) a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, and a C 1 -C 60 heteroaryl group; and

iv) a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, and a C 1 -C 60 heteroaryl group substituted with at least one substituent selected from a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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, a C 1 -C 60 alkoxy group, a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -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, and a C 1 -C 60 heteroaryl group; and

p and q are each independently an integer from 1 to 4.

2. The organic light-emitting device of claim 1 , wherein Formula 1 or Formula 2 is represented by one of Formulas 1-1 to 1-24,

wherein, in Formulas 1-1 to 1-24,

Y is O, S, or C(R 31 )(R 32 );

L 1 to L 3 are each independently selected from a substituted or unsubstituted C 3 -C 10 cycloalkylene group, a substituted or unsubstituted C 3 -C 10 cycloalkenylene group, a substituted or unsubstituted C 6 -C 60 arylene group, a substituted or unsubstituted C 2 -C 10 heterocycloalkylene group, a substituted or unsubstituted C 2 -C 10 heterocycloalkenylene group, and a substituted or unsubstituted C 1 -C 60 heteroarylene group;

n1 to n3 are each independently an integer of 0 to 3;

Ar 1 to Ar 3 are each independently selected from:

i) a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, and a C 1 -C 60 heteroaryl group; and

ii) a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -C 10 heterocycloalkenyl group, C 6 -C 60 aryl group, and a C 1 -C 60 heteroaryl group substituted with at least one substituent selected from a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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, a C 1 -C 60 alkoxy group, a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -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, and a C 1 -C 60 heteroaryl group;

R 31 and R 32 are each independently selected from:

i) a hydrogen atom, a deuterium atom, 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;

ii) 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 substituted with at least one substituent selected from a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -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, and a C 1 -C 60 heteroaryl group;

iii) a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, and a C 1 -C 60 heteroaryl group; and

iv) a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, and a C 1 -C 60 heteroaryl group substituted with at least one substituent selected from a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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, a C 1 -C 60 alkoxy group, a C 3 -C 10 cycloalkyl group, a C 3 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 3 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 6 -C 60 aryloxy group, C 6 -C 60 arylthio group, and a C 1 -C 60 heteroaryl group.

3. The organic light-emitting device of claim 1 , wherein L 1 to L 3 are each independently selected from:

i) a phenylene group, a fluorenylene group, a pyridylene group, a pyrimidylene group, a triazinylene group, and a quinazolinylene group;

ii) a phenylene group, a fluorenylene group, a pyridylene group, a pyrimidylene group, a triazinylene group, and a quinazolinylene group substituted with at least one substituent selected from a phenyl group, a naphthyl group, and a pyridyl group; and

iii) a phenylene group, a fluorenylene group, a pyridylene group, a pyrimidylene group, a triazinylene group, and a quinazolinylene group substituted with at least one substituent selected from a deuterium atom, a methyl group, an ethyl group, an n-octyl group, a methoxy group, an ethoxy group, a phenyl group, a naphthyl group, a pyridyl group, and a carbazole group.

4. The organic light-emitting device of claim 1 , wherein Ar 1 to Ar 3 are each independently selected from:

i) a C 6 -C 60 aryl group, a C 1 -C 60 heteroaryl group, and —Si(Q 1 )(Q 2 )(Q 3 ), Q 1 to Q 3 each independently being a C 1 -C 10 alkyl group or a C 6 -C 30 aryl group; and

ii) a C 6 -C 60 aryl group and a C 1 -C 60 heteroaryl group substituted with at least one substituent selected from a deuterium atom, a halogen atom, a C 1 -C 60 alkyl group, a C 6 -C 60 aryl group, a C 1 -C 60 heteroaryl group, and —Si(Q 1 )(Q 2 )(Q 3 ), Q 1 to Q 3 each independently being a C 1 -C 10 alkyl group or a C 6 -C 30 aryl group.

5. The organic light-emitting device of claim 1 , wherein Ar 1 to Ar 3 are each independently selected from:

i) a phenyl group, a pyridyl group, a pyrimidyl group, a triazinyl group, and —Si(Q 1 )(Q 2 )(Q 3 ), Q 1 to Q 3 each independently being a methyl group, an ethyl group, an n-propyl group, an i-propyl group, or a phenyl group; and

ii) a phenyl group, a pyridyl group, a pyrimidyl group, and a triazinyl group substituted with at least one substituent selected from a deuterium atom, a halogen atom, a phenyl group, a pyridyl group, and —Si(Q 1 )(Q 2 )(Q 3 ), Q 1 to Q 3 each independently being a methyl group, an ethyl group, an n-propyl group, an i-propyl group, or a phenyl group.

6. The organic light-emitting device of claim 1 , wherein Ar 1 to Ar 3 are each independently a moiety represented by one of Formulas H1 to H5:

wherein, in Formulas H1 to H5,

represents a binding site to one of L 1 to L 3 in Formula 1 or Formula 2, or to N in Formula 1 or Formula 2.

7. The organic light-emitting device of claim 1 , wherein Z 1 to Z 4 , R 31 , and R 32 are each independently selected from:

i) a C 1 -C 60 alkyl group, and a C 1 -C 60 alkoxy group;

ii) a C 1 -C 60 alkyl group and a C 1 -C 60 alkoxy group substituted with at least one substituent selected from a deuterium atom, a halogen atom, a C 6 -C 60 aryl group, and a C 1 -C 60 heteroaryl group;

iii) a C 6 -C 60 aryl group and a C 1 -C 60 heteroaryl group; and

iv) a C 6 -C 60 aryl group and a C 1 -C 60 heteroaryl group substituted with at least one substituent selected from a deuterium atom, a halogen atom, a C 1 -C 60 alkyl group, a C 6 -C 60 aryl group, and a C 1 -C 60 heteroaryl group.

8. The organic light-emitting device of claim 1 , wherein Z 1 to Z 4 , R 31 , and R 32 are each independently selected from:

i) 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, and a tert-butyl group;

ii) a phenyl group, a naphthyl group, and a pyridyl group;

iv) a phenyl group, a naphthyl group, and a pyridyl group substituted with at least one substituent selected from 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, and a tert-butyl group.

9. The organic light-emitting device of claim 1 , wherein the light-emitting material is selected from Compound 1 to 108:

10. The organic light-emitting device of claim 1 , wherein X 11 is C(R 11 ), X 12 is C(R 12 ), X 13 is C(R 13 ), X 14 is C(R 14 ), X 15 is C(R 15 ), X 16 is C(R 16 ), X 17 is C(R 17 ), X 18 is C(R 18 ), X 19 is C(R 19 ), X 20 is C(R 20 ), X 21 is C(R 21 ), X 22 is C(R 22 ), X 23 is C(R 23 ), and X 24 is C(R 24 ).

11. The organic light-emitting device of claim 1 , wherein Ar 13 and Ar 14 are each independently selected from:

i) a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a phenanthrenyl group, an anthryl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, a quinolinyl group, a benzoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, and a triazinyl group; and

ii) a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a phenanthrenyl group, an anthryl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, a quinolinyl group, a benzoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, and a triazinyl group substituted with at least one substituent selected from a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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 20 alkyl group, a C 1 -C 20 alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a phenanthrenyl group, an anthryl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, a quinolinyl group, a benzoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, and a triazinyl group.

12. The organic light-emitting device of claim 1 , wherein Ar 13 and Ar 14 are each independently a moiety represented by one of Formulas 3-1 to 3-20:

wherein, in Formulas 3-1 to 3-20, * represents a binding site to N in Formula 2(1) or Formula 2(2).

13. The organic light-emitting device of claim 1 , wherein Z 11 and Z 12 are each independently selected from:

i) a C 1 -C 20 alkyl group;

ii) a C 1 -C 20 alkyl group that is substituted with at least one substituent selected from a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a phenanthrenyl group, an anthryl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, a quinolinyl group, a benzoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, and a triazinyl group;

iii) a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a phenanthrenylene group, an anthryl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, a quinolinyl group, a benzoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, and a triazinyl group; and

iv) a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a phenanthrenyl group, an anthryl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, a quinolinyl group, a benzoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, and a triazinyl group substituted with at least one substituent selected from a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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 20 alkyl group, a C 1 -C 20 alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a phenanthrenyl group, an anthryl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, a quinolinyl group, a benzoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, and a triazinyl group.

14. The organic light-emitting device of claim 1 , wherein Z 11 and Z 12 are each independently selected from a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, and a moiety represented by one of Formulas 3-1 to 3-20:

wherein, in Formulas 3-1 to 3-20, * represents a carbon atom of a fluorene-based ring of Formula 2(1) or Formula 2(2).

15. The organic light-emitting device of claim 1 , wherein Z 5 , Z 6 , and R 11 to R 24 are each independently selected from a hydrogen atom, a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, and a C 1 -C 20 alkyl group.

16. The organic light-emitting device of claim 1 , wherein Z 5 , Z 6 , and R 11 to R 24 are each independently selected from a hydrogen atom, a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, and a moiety represented by one of Formulas 3-1 to 3-20:

wherein, in Formulas 3-1 to 3-20, * represents a carbon atom of a fluorene-based ring or a benzene-based ring of Formula 2(1) or Formula 2(2).

17. The organic light-emitting device of claim 1 , wherein the hole-transporting material is represented by one of Formulas 2a and 2b:

wherein, in Formula 2a or Formula 2b,

Ar 13 and Ar 14 are each independently represented by one of Formulas 3-1 to 3-20;

Z 11 and Z 12 are each independently represented by a C 1 -C 20 alkyl group or one of Formulas 3-1 to 3-20:

wherein, in Formulas 3-1 to 3-20, * represents a carbon atom of a fluorene-based ring or a benzene-based ring of Formula 2a or Formula 2b,

Z 5 , Z 6 , and R 11 to R 24 are each independently selected from a hydrogen atom, a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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 20 alkyl group, and a group represented by one of Formulas 3-1 to 3-20, and

p and q are each independently an integer of 1 to 4.

18. The organic light-emitting device of claim 1 , wherein the hole-transporting material is selected from Compounds 6-1 to 6-144:

19. An organic light-emitting device comprising:

a first electrode;

a second electrode; and

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

wherein the emission layer comprises at least one light-emitting material represented by one of Formulas 1-1 to 1-24;

wherein the organic layer further comprises at least one hole-transporting material represented by one of Formulas 2a and 2b:

wherein, in Formulas 1-1 to 1-24,

Y is O, S, or C(R 31 )(R 32 );

L 1 to L 3 are each independently selected from:

i) a phenylene group, a fluorenylene group, a pyridylene group, a pyrimidylene group, a triazinylene group, and a quinazolinylene group;

ii) a phenylene group, a fluorenylene group, a pyridylene group, a pyrimidylene group, a triazinylene group, and a quinazolinylene group substituted with at least one substituent selected from a phenyl group, a naphthyl group, and a pyridyl group;

iii) a phenylene group, a fluorenylene group, a pyridylene group, a pyrimidylene group, a triazinylene group, and a quinazolinylene group substituted with at least one substituent selected from a deuterium atom, a methyl group, an ethyl group, an n-octyl group, a methoxy group, an ethoxy group, a phenyl group, a naphthyl group, a pyridyl group, and a carbazole group;

n1 to n3 are each independently an integer from 0 to 3;

Ar 1 to Ar 3 are each independently represented by a moiety selected from Formulas H1 to H5;

wherein, in Formulas H1 to H5, * represents a binding site to one of L 1 to L 3 in Formula 1 or Formula 2 or to N in Formula 1 or Formula 2;

R 31 and R 32 are each independently selected from:

i) 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, and a tert-butyl group;

ii) a phenyl group, a naphthyl group, and a pyridyl group;

iv) a phenyl group, a naphthyl group, and a pyridyl group substituted with at least one substituent selected from 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, and a tert-butyl group;

wherein, in Formula 2a or Formula 2b,

Ar 13 and Ar 14 are each independently a moiety represented by one of Formulas 3-1 to 3-20;

Z 11 and Z 12 are each independently selected from a C 1 -C 20 alkyl group and one of Formulas 3-1 to 3-20:

Z 5 , Z 6 , and R 11 to R 24 may each independently be selected from a hydrogen atom, a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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 20 alkyl group, and a group represented by one of Formulas 3-1 to 3-20,

wherein, in Formulas 3-1 to 3-20, * represents a carbon atom of a fluorene-based ring or a benzene-based ring of Formula 2a or Formula 2b, and

p and q are each independently an integer from 1 to 4.

20. An organic light-emitting device comprising

a first electrode;

a second electrode; and

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

wherein the emission layer comprises at least one of Compounds 1 to 108, and wherein the organic layer further comprises at least one of Compounds 6-1 to 6-144: