Organometallic compound, organic light-emitting device including the same and electronic apparatus including the organic light-emitting device
Provided are an organometallic compound represented by Formula 1, an organic light-emitting device including the same and an electronic apparatus including the organic light-emitting device: M(L 1 ) n1 (L 2 ) n2 <Formula 1> wherein M, L 1 , L 2 , n1, and n2 in Formula 1 are the same as described in the detailed description.
1. An organometallic compound represented by Formula 1:
M(L 1 ) n-1 (L 2 ) n-2 <Formula 1>
wherein, in Formula 1,
M is a transition metal,
L 1 is a ligand represented by Formula 2,
L 2 is a ligand represented by Formula 3,
n1 and n2 are each independently 1 or 2, wherein when n1 is 2, two L 1 (s) are identical to or different from each other, and when n2 is 2, two L 2 (s) are identical to or different from each other,
wherein, in Formulae 2 and 3,
Y 21 is C or N,
ring CY 2 is a C 5 -C 30 carbocyclic group or a C 1 -C 30 heterocyclic group,
X 11 is Si,
X 1 is O, S, Se, N(Z 19 ), C(Z 19 )(Z 20 ), or Si(Z 19 )(Z 20 ),
A 21 to A 24 are each independently C or N,
L 3 is a single bond, a C 5 -C 30 carbocyclic group unsubstituted or substituted with at least one R 10a , or a C 1 -C 30 heterocyclic group unsubstituted or substituted with at least one R 10a ,
R 2 , R 11 to R 16 , Z 1 to Z 3 , Z 19 , and Z 20 are each independently hydrogen, deuterium, —F, —Cl, —Br, —I, —SF 5 , 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 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 1 -C 60 alkylthio 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 arylthio group, a substituted or unsubstituted C 1 -C 60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, —N(Q 1 )(Q 2 ), —Si(Q 3 )(Q 4 )(Q 5 ), —Ge(Q 3 )(Q 4 )(Q 5 ), —B(Q 6 )(Q 7 ), —P(═O)(Q 8 )(Q 9 ), or —P(Q 8 )(Q 9 ),
a2 is an integer from 0 to 20, and when a2 is 2 or more, two or more R 2 (s) are identical to or different from each other,
b1 is an integer from 0 to 6, and when b1 is 2 or more, two or more Z 1 (s) are identical to or different from each other,
b2 is an integer from 0 to 4, and when b2 is 2 or more, two or more Z 2 (s) are identical to or different from each other,
R 11 and R 12 are optionally linked to form a C 5 -C 30 carbocyclic group unsubstituted or substituted with at least one R 10a , or a C 1 -C 30 heterocyclic group unsubstituted or substituted with at least one R 10a ,
two or more of a plurality of R 2 (s) are optionally linked to form a C 5 -C 30 carbocyclic group unsubstituted or substituted with at least one R 10a or a C 1 -C 30 heterocyclic group unsubstituted or substituted with at least one R 10a ,
two or more of a plurality of Z 1 (s) are optionally linked to form a C 5 -C 30 carbocyclic group unsubstituted or substituted with at least one R 10a or a C 1 -C 30 heterocyclic group unsubstituted or substituted with at least one R 10a ,
two or more of a plurality of Z 2 (s) are optionally linked to form a C 5 -C 30 carbocyclic group unsubstituted or substituted with at least one R 10a or a C 1 -C 30 heterocyclic group unsubstituted or substituted with at least one R 10a ,
R 10a is the same as defined in connection with Z 1 ,
* and *′ each indicate a binding site to M in Formula 1,
provided that at least one of i) to v) is true:
i) b1 is at least one and the at least one Z 1 is C 1 -C 3 alkyl group unsubstituted or substituted with at least one deuterium,
ii) b2 is at least one and the at least one Z 2 is —CD 3 ,—CD 2 H, —CDH 2 or —CH3,
iii) at least one of R 2 , R 11 , R 12 and R 13 is deuterium; —CD 3 ; —CD 2 H; —CDH 2 ; a substituted or unsubstituted C 2 -C 60 alkyl group; or a substituted or unsubstituted C 6 -C 60 aryl group,
iv) R 2 is deuterium, 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 3 -C 10 cycloalkyl 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 arylthio group, a substituted or unsubstituted C 1 -C 60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, or a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, and at least one of R 11 , R 12 and R 13 is deuterium, 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 3 -C 10 cycloalkyl 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 arylthio group, a substituted or unsubstituted C 1 -C 60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, or a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group,
v) a group represented by *-L 3 -Z 3 is a group represented Formula 9-3, 10-12, 10-19, 10-45, 10-48, 10-59, 10-62, 10-70 or 10-121,
a substituent of the 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 1 -C 60 alkylthio 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 aryl group, the substituted C 6 -C 60 aryloxy group, the substituted C 6 -C 60 arylthio group, the substituted C 1 -C 60 heteroaryl group, the substituted monovalent non-aromatic condensed polycyclic group, and the substituted monovalent non-aromatic condensed heteropolycyclic group is:
deuterium, —F, —Cl, —Br, —I, —CD 3 , —CD 2 H, —CDH 2 , —CF 3 , —CF 2 H, —CFH 2 , 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, a C 1 -C 60 alkoxy group, or a C 1 -C 60 alkylthio group;
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, or a C 1 -C 60 alkylthio group, each substituted with deuterium, —F, —Cl , —Br, —I, —CD 3 , —CD 2 H, —CDH 2 , —CF 3 , —CF 2 H, —CFH 2 , 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 heteropolycyclic group, —N(Q 11 )(Q 12 ), —Si(Q 13 )(Q 14 ) (Q 15 ), —Ge(Q 13 )(Q 14 )(Q 15 ), —B(Q 16 )(Q 17 ), —P(═O)(Q 18 )(Q 19 ), —P(Q 18 )(Q 19 ), or any combination 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 -C60 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, or a monovalent non-aromatic condensed heteropolycyclic group, each unsubstituted or substituted with deuterium, —F, —Cl, —Br, —I, —CD 3 , —CD 2 H, —CDH 2 , —CF 3 , —CF 2 H, —CFH 2 , 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, a C 1 -C 60 alkoxy group, a C 1 -C 60 alkylthio 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 heteropolycyclic group, —N(Q 21 )(Q 22 ), —Si(Q 23 )(Q 24 )(Q 25 ), —Ge(Q 23 )(Q 24 )(Q 25 ), —B(Q 26 )(Q 27 ), —P(═O)(Q 28 )(Q 29 ), —P(Q 28 )(Q 29 ), or any combination thereof;
—N(Q 31 )(Q 32 ), —Si(Q 33 )(Q 34 )(Q 35 ), —Ge(Q 33 )(Q 34 )(Q 35 ), —B(Q 36 )(Q 37 ), —P(═O)(Q 38 )(Q 39 ), or —P(Q 38 )(Q 39 ); or
any combination thereof,
wherein Q 1 to Q 9 , Q 11 to Q 19 , Q 21 to Q 29 , and Q 31 to Q 39 are each independently hydrogen; deuterium; —F; —Cl; —Br; —I; a hydroxyl group; a cyano group; a nitro 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, unsubstituted or substituted with deuterium, —F, a C 1 -C 60 alkyl group, a C 6 -C 60 aryl group, or any combination thereof; a C 2 -C 60 alkenyl group; a C 2 -C 60 alkynyl group; a C 1 -C 60 alkoxy group; a C 1 -C 60 alkylthio 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, unsubstituted or substituted with deuterium, —F, a C 1 -C 60 alkyl group, a C 6 -C 60 aryl group, or any combination thereof; 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; or a monovalent non-aromatic condensed heteropolycyclic group.
2. The organometallic compound of claim 1 , wherein
ring CY 2 is a benzene group, a naphthalene group, an anthracene group, a phenanthrene group, a 1,2,3,4-tetrahydronaphthalene group, a carbazole group, a fluorene group, a dibenzosilole group, a dibenzothiophene group, or a dibenzofuran group.
3. The organometallic compound of claim 1 , wherein
L 3 in Formula 1 is:
a single bond; or
a benzene group, a naphthalene group, a dibenzofuran group, or a dibenzothiophene group, each unsubstituted or substituted with deuterium, —F, a cyano group, a C 1 -C 20 alkyl group, a deuterated C 1 -C 20 alkyl group, a fluorinated C 1 -C 20 alkyl group, a C 3 -C 10 cycloalkyl group, a deuterated C 3 -C 10 cycloalkyl group, a fluorinated C 3 -C 10 cycloalkyl group, a (C 1 -C 20 alkyl)C 3 -C 10 cycloalkyl group, a phenyl group, a deuterated phenyl group, a fluorinated phenyl group, a (C 1 -C 20 alkyl)phenyl group, a naphthyl group, a pyridinyl group, a furanyl group, a thiophenyl group, a benzofuranyl group, a benzothiophenyl group, a dibenzofuranyl group, a dibenzothiophenyl group, or any combination thereof.
4. The organometallic compound of claim 1 , wherein
R 2 , R 11 to R 13 , Z 1 to Z 3 , Z 19 and Z 20 in Formulae 2 and 3 are each independently:
hydrogen, deuterium, —F, or a cyano group; or
a C 1 -C 20 alkyl group, a C 3 -C 10 cycloalkyl group, a phenyl group, a naphthyl group, a pyridinyl group, a furanyl group, a thiophenyl group, a benzofuranyl group, a benzothiophenyl group, a dibenzofuranyl group, or a dibenzothiophenyl group, each unsubstituted or substituted with deuterium, —F, a cyano group, a C 1 -C 20 alkyl group, a deuterated C 1 -C 20 alkyl group, a fluorinated C 1 -C 20 alkyl group, a C 3 -C 10 cycloalkyl group, a deuterated C 3 -C 10 cycloalkyl group, a fluorinated C 3 -C 10 cycloalkyl group, a (C 1 -C 20 alkyl)C 3 -C 10 cycloalkyl group, a phenyl group, a deuterated phenyl group, a fluorinated phenyl group, a (C 1 -C 20 alkyl)phenyl group, a naphthyl group, a pyridinyl group, a furanyl group, a thiophenyl group, a benzofuranyl group, a benzothiophenyl group, a dibenzofuranyl group, a dibenzothiophenyl group, —Si(Q 33 )(Q 34 )(Q 35 ), —Ge(Q 33 )(Q 34 )(Q 35 ), or any combination thereof, and
R 14 to R 16 in Formula 2 are each independently a C 1 -C 20 alkyl group, a C 3 -C 10 cycloalkyl group, a phenyl group, a naphthyl group, a pyridinyl group, a furanyl group, a thiophenyl group, a benzofuranyl group, a benzothiophenyl group, a dibenzofuranyl group, or a dibenzothiophenyl group, each unsubstituted or substituted with deuterium, —F, a cyano group, a C 1 -C 20 alkyl group, a deuterated C 1 -C 20 alkyl group, a fluorinated C 1 -C 20 alkyl group, a C 3 -C 10 cycloalkyl group, a deuterated C 3 -C 10 cycloalkyl group, a fluorinated C 3 -C 10 cycloalkyl group, a (C 1 -C 20 alkyl)C 3 -C 10 cycloalkyl group, a phenyl group, a deuterated phenyl group, a fluorinated phenyl group, a (C 1 -C 20 alkyl)phenyl group, a naphthyl group, a pyridinyl group, a furanyl group, a thiophenyl group, a benzofuranyl group, a benzothiophenyl group, a dibenzofuranyl group, a dibenzothiophenyl group, or any combination thereof.
5. The organometallic compound of claim 1 , wherein
R 11 is not hydrogen.
6. The organometallic compound of claim 1 , wherein satisfying at least one of <Condition A>and <Condition B>:
<Condition A>
L 3 is a C 5 -C 30 carbocyclic group unsubstituted or substituted with at least one R 10a , or a C 1 -C 30 heterocyclic group unsubstituted or substituted with at least one R 10a ,
<Condition B>
Z 3 is 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, or a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group.
7. The organometallic compound of claim 1 , wherein
a group represented by
in Formulae 2 is a group represented by one of Formulae CY2-1 to CY2-33:
wherein, in Formulae CY2-1 to CY2-33,
Y 21 and R 2 are the same as described in claim 1 ,
X 22 is C(R 22 )(R 23 ), N(R 22 ), O, S, or Si(R 22 )(R 23 ),
R 22 to R 29 are the same as described in connection with R 2 in claim 1 ,
a28 is an integer from 0 to 8,
a26 is an integer from 0 to 6,
a24 is an integer from 0 to 4,
a23 is an integer from 0 to 3,
a22 is an integer from 0 to 2,
*” indicates a binding site to a neighboring atom in Formula 2, and
* indicates a binding site to M in Formula 1.
8. The organometallic compound of claim 1 , wherein
a group represented by
in Formula 3 is a group represented by one of Formulae CY3-1 to CY3-6:
wherein, in Formulae CY3-1 to CY3-6,
X 1 , Z 1 , and b1 are the same as described in claim 1 ,
* indicates a binding site to M in Formula 1, and
*” indicates a binding site to a neighboring atom in Formula 3.
9. The organometallic compound of claim 1 , wherein
a group represented by
in Formula 3 is a group represented by one of Formulae CY3-1A to CY3-1D, CY3-2A to CY3-2D, CY3-3A to CY3-3D, CY3-4A to CY3-4D, CY3-5A to CY3-5D, and CY3-6A to CY3-6D:
wherein, in Formulae CY3-1A to CY3-1D, CY3-2A to CY3-2D, CY3-3A to CY3-3D, CY3-4A to CY3-4D, CY3-5A to CY3-5D, and CY3-6A to CY3-6D,
X 1 and Z 1 are the same as described in claim 1 ,
ring CY 30 and ring CY 31 are each independently a C 5 -C 30 carbocyclic group or a C 1 -C 30 heterocyclic group,
R 30a and R 31a are each the same as described in connection with R 10a in claim 1 ,
b12 may be an integer from 0 to 2,
b14 may be an integer from 0 to 4,
b30 and b31 may each independently be an integer from 0 to 20, when b30 is 2 or more, two or more R 30a (s) may be identical to or different from each other, and when b31 is 2 or more, two or more R 31a (s) may be identical to or different from each other,
* indicates a binding site to M in Formula 1, and
*” indicates a binding site to a neighboring atom in Formula 3.
10. The organometallic compound of claim 1 , wherein
a group represented by
in Formula 3 is a group represented by one of Formulae CY3(1) to CY3(132):
wherein, in Formulae CY3(1) to CY3(132),
X 1 is the same as described in claim 1 ,
Z 11 to Z 18 are the same as described in connection with Z 1 in claim 1 , and each of Z 11 to Z 18 is not hydrogen,
* indicates a binding site to M in Formula 1, and
*” indicates a binding site to a neighboring atom in Formula 3.
11. The organometallic compound of claim 1 , wherein
a group represented by
in Formula 3 is a group represented by one of Formulae CY4-1 to CY4-60:
wherein, in Formulae CY4-1 to CY4-60,
L 3 and Z 3 are the same as described in claim 1 ,
Z 21 to Z 24 are the same as described in connection with Z 2 in claim 1 , and each of Z 21 to Z 24 is not hydrogen,
*′ indicates a binding site to M in Formula 1, and
*” indicates a binding site to a neighboring atom in Formula 3.
12. The organometallic compound of claim 1 , wherein
a group represented by
in Formula 3 is a group represented by one of Formulae CY4(1) to CY4(4):
wherein, in Formulae CY4(1) to CY4(4),
A 21 to A 24 , L 3 , Z 2 , Z 3 and R 10a are the same as described in claim 1 ,
b22 is an integer from 0 to 2,
ring CY 10 and ring CY 11 are each independently a C 5 -C 30 carbocyclic group or a C 1 -C 30 heterocyclic group,
R 11a is the same as described in connection with R 10a ,
b3 and b4 are each independently an integer from 0 to 20, when b3 is 2 or more, two or more R 10a (s) are identical to or different from each other, and when b4 is 2 or more, two or more R 11a (s) are identical to or different from each other,
*′ indicates a binding site to M in Formula 1, and
*” indicates a binding site to a neighboring atom in Formula 3.
13. The organometallic compound of claim 1 , wherein
a group represented by
in Formula 3 is a group represented by one of Formulae CY4(1)-1 to CY4(1)-4, CY4(2)-1 to CY4(2)-4, CY4(3)-1 to CY4(3)-4 and CY4(4)-1:
wherein, in Formulae CY4(1)-1 to CY4(1)-4, CY4(2)-1 to CY4(2)-4, CY4(3)-1 to CY4(3)-4 and CY4(4)-1,
A 21 to A 24 , L 3 , Z 2 , Z 3 and R 10a are the same as described in claim 1 ,
b22 is an integer from 0 to 2,
R 11a is the same as described in connection with R 10a ,
b34 and b44 may each independently be an integer from 0 to 4, when b34 is 2 or more, two or more R 10a (s) may be identical to or different from each other, and when b44 is 2 or more, two or more R 11a (s) may be identical to or different from each other,
b36 may be an integer from 0 to 6, when b36 is 2 or more, two or more R 10a (s) may be identical to or different from each other,
*′ indicates a binding site to M in Formula 1, and
*” indicates a binding site to a neighboring atom in Formula 3.
14. The organometallic compound of claim 1 , wherein
an absolute value of a difference of a highest occupied molecular orbital energy level of the organometallic compound and a lowest unoccupied molecular orbital energy level of the organometallic compound is about 3.48 eV and or more.
15. The organometallic compound of claim 1 , wherein
an absolute value of a difference of a highest occupied molecular orbital energy level of the organometallic compound and a lowest unoccupied molecular orbital energy level of the organometallic compound divided by T 1 energy level of the organometallic compound is about 1.364 eV and or more.
16. An organic light-emitting device comprising:
a first electrode;
a second electrode; and
an organic layer located between the first electrode and the second electrode and comprising an emission layer,
wherein the organic layer comprises at least one of the organometallic compound of claim 1 .
17. The organic light-emitting device of claim 16 , wherein
the first electrode is an anode,
the second electrode is a cathode,
the organic layer comprises a hole transport region between the first electrode and the emission layer and an electron transport region between the emission layer and the second electrode,
the hole transport region comprises a hole injection layer, a hole transport layer, an electron blocking layer, a buffer layer, or any combination thereof, and
the electron transport region comprises a hole blocking layer, an electron transport layer, an electron injection layer, or any combination thereof.
18. The organic light-emitting device of claim 16 , wherein
the organometallic compound is included in the emission layer.
19. The organic light-emitting device of claim 18 , wherein
the emission layer emits green light.
20. The organic light-emitting device of claim 18 , wherein
the emission layer further comprises a host and the amount of the host is greater than the amount of the organometallic compound.