Light emitting element and organometallic compound for the same

1 . A light emitting element comprising:

a first electrode;

a second electrode on the first electrode; and

an emission layer between the first electrode and the second electrode, and comprising an organometallic compound represented by Formula 1:

wherein in Formula 1,

Y 10 to Y 12 , Y 20 to Y 22 , and Y 30 to Y 32 are each independently C or N,

ring groups A10 to A30 are each independently a substituted or unsubstituted hydrocarbon ring group having 5 to 60 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 ring-forming carbon atoms,

a1 to a3 are each independently an integer from 0 to 3,

L 1 to L 3 are each independently a direct linkage, O, S, —C(R a11 )(R a12 )—, —C(R a13 )═, —C(R a14 )═C(R a15 )—, —C≡C—, —C(═O)—, —C(═S)—, —B(R a16 )—, —N(R a17 )—, —P(R a18 )—, —Si(R a19 )(R a20 )—, or —Ge(R a21 )(R a22 )—,

b1 to b3 are each independently an integer from 0 to 8,

b5 is an integer from 0 to 6, and

R 1 to R 5 and R a11 to R a22 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, an amidino group, a sulfinyl group, a sulfonyl group, a carbonyl group, a phosphine group, a phosphine oxide group, a phosphine sulfide group, a substituted or unsubstituted boron group, a substituted or unsubstituted silyl group, a substituted or unsubstituted amine group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thio group, a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 60 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 60 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 ring-forming carbon atoms, and/or bonded to an adjacent group to form a ring.

2 . The light emitting element of claim 1 , wherein Formula 1 is represented by Formula 2:

wherein in Formula 2,

R 11 to R 13 , R 21 to R 24 , and R 31 to R 33 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, an amidino group, a sulfinyl group, a sulfonyl group, a carbonyl group, a phosphine group, a phosphine oxide group, a phosphine sulfide group, a substituted or unsubstituted boron group, a substituted or unsubstituted silyl group, a substituted or unsubstituted amine group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thio group, a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 60 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 ring-forming carbon atoms, and/or bonded to an adjacent group to form a ring, and

a1 to a3, L 1 to L 3 , b5, R 4 , and R 5 are the same as defined in Formula 1.

3 . The light emitting element of claim 2 , wherein Formula 2 is represented by Formula 3:

wherein in Formula 3,

a1 to a3, L 1 to L 3 , b5, R 4 , R 5 , R 11 , R 21 to R 24 , and R 31 to R 33 are the same as defined in Formula 2.

4 . The light emitting element of claim 1 , wherein in Formula 1, L 1 and L 3 are each independently a direct linkage, and L 2 is O.

5 . The light emitting element of claim 1 , wherein in Formula 1, R 1 to R 5 are each independently a hydrogen atom, a deuterium atom, a dimethylamine group, a trimethylsilyl group, a substituted or unsubstituted methyl group, a substituted or unsubstituted isopropyl group, a substituted or unsubstituted i-butyl group, a substituted or unsubstituted t-butyl group, or a substituted or unsubstituted phenyl group.

6 . The light emitting element of claim 1 , wherein in Formula 1, R 1 to R 5 are each independently represented by any one selected from among R-1 to R-10:

wherein in R-2 and R-6,

D is a deuterium atom,

wherein in R-10,

b70 is an integer from 0 to 5, and

R 70 is a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms.

7 . The light emitting element of claim 1 , wherein in Formula 1, one or more of R 1 to R 5 comprise a deuterium atom or a substituent containing a deuterium atom.

8 . The light emitting element of claim 1 , wherein the emission layer comprises a hole transporting host, an electron transporting host, and a dopant,

the dopant containing the organometallic compound.

9 . The light emitting element of claim 8 , wherein the hole transporting host comprises a compound represented by Formula HT-1, and the electron transporting host comprises a compound represented by Formula ET-1:

wherein in Formula HT-1,

a10 is an integer from 0 to 8, and

R 100 and R 101 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring-forming carbon atoms;

wherein in Formula ET-1,

one or more of Y 51 to Y 53 is N and the Y 51 to Y 53 that are not N are each independently CR a ,

R a is a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring-forming carbon atoms,

e1 to e3 are each independently an integer from 0 to 10,

L 51 to L 53 are each independently a direct linkage, a substituted or unsubstituted arylene group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroarylene group having 2 to 30 ring-forming carbon atoms, and

Ar 1 to Ar 3 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms.

10 . The light emitting element of claim 8 , wherein the dopant further comprises a delayed fluorescent compound.

11 . The light emitting element of claim 1 , wherein the organometallic compound is represented by any one selected from among compounds of Compound Group 1:

wherein in Compound Group 1, D is a deuterium atom.

12 . An organometallic compound represented by Formula 1:

wherein in Formula 1,

Y 10 to Y 12 , Y 20 to Y 22 , and Y 30 to Y 32 are each independently C or N,

ring groups A10 to A30 are each independently a substituted or unsubstituted hydrocarbon ring group having 5 to 60 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 ring-forming carbon atoms,

a1 to a3 are each independently an integer from 0 to 3,

L 1 to L 3 are each independently a direct linkage, O, S, —C(R a11 )(R a12 )—, —C(R a13 )═, —C(R a14 )═C(R a15 )—, —C≡C—, —C(═O)—, —C(═S)—, —B(R a16 )—, —N(R a17 )—, —P(R a18 )—, —Si(R a19 )(R a20 )—, or —Ge(R a21 )(R a22 )—,

b1 to b3 are each independently an integer from 0 to 8,

b5 is an integer from 0 to 6, and

R 1 to R 5 and R a11 to R a22 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, an amidino group, a sulfinyl group, a sulfonyl group, a carbonyl group, a phosphine group, a phosphine oxide group, a phosphine sulfide group, a substituted or unsubstituted boron group, a substituted or unsubstituted silyl group, a substituted or unsubstituted amine group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thio group, a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 60 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 60 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 ring-forming carbon atoms, and/or bonded to an adjacent group to form a ring.

13 . The organometallic compound of claim 12 , wherein Formula 1 is represented by Formula 2:

wherein in Formula 2,

R 11 to R 13 , R 21 to R 24 , and R 31 to R 33 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, an amidino group, a sulfinyl group, a sulfonyl group, a carbonyl group, a phosphine group, a phosphine oxide group, a phosphine sulfide group, a substituted or unsubstituted boron group, a substituted or unsubstituted silyl group, a substituted or unsubstituted amine group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thio group, a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 60 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 ring-forming carbon atoms, and/or bonded to an adjacent group to form a ring, and

a1 to a3, L 1 to L 3 , b5, R 4 , and R 5 are the same as defined in Formula 1.

14 . The organometallic compound of claim 13 , wherein Formula 2 is represented by Formula 3:

wherein in Formula 3,

a1 to a3, L 1 to L 3 , b5, R 4 , R 5 , R 11 , R 21 to R 24 , and R 31 to R 33 are the same as defined in Formula 2.

15 . The organometallic compound of claim 12 , wherein in Formula 1, L 1 and L 3 are each independently a direct linkage, and L 2 is O.

16 . The organometallic compound of claim 12 , wherein in Formula 1, R 1 to R 5 are each independently a hydrogen atom, a deuterium atom, a dimethylamine group, a trimethylsilyl group, a substituted or unsubstituted methyl group, a substituted or unsubstituted isopropyl group, a substituted or unsubstituted i-butyl group, a substituted or unsubstituted t-butyl group, or a substituted or unsubstituted phenyl group.

17 . The organometallic compound of claim 12 , wherein in Formula 1, R 1 to R 5 are each independently represented by any one selected from among R-1 to R-10:

wherein in R-2 and R-6,

D is a deuterium atom,

wherein in R-10,

b70 is an integer from 0 to 5, and

R 70 is a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms.

18 . The organometallic compound of claim 12 , wherein in Formula 1, one or more of R 1 to R 5 comprise a deuterium atom or a substituent containing a deuterium atom.

19 . The organometallic compound of claim 12 , wherein in Formula 1, one or more of R 1 to R 5 comprise a t-butyl group or a substituent containing a t-butyl group.

20 . The organometallic compound of claim 12 , wherein Formula 1 is represented by any one selected from among compounds of Compound Group 1:

wherein in Compound Group 1, D is a deuterium atom.