Organic light emitting diode and organic light emitting device having thereof

1 . An organic light emitting diode including:

a first electrode;

a second electrode facing the first electrode; and

an emissive layer disposed between the first and second electrodes and including at least one emitting material layer including:

a host including:

a first host having a structure represented by Formula 7, and

a second host having a structure represented by Formula 9, and

a dopant including an organometallic compound having a structure represented by Formula 1,

wherein:

Formula 1 is:

where in Formula 1,

L A has a structure represented by Formula 2;

L B is an auxiliary ligand having a structure represented by Formula 5A;

m is 1 or 2;

n is 1 or 2; and

m+n is 3,

Formula 2 is:

where in Formula 2,

X 1 is CR 7 ;

X 2 is CR 7 or N;

each of X 3 to X 5 is independently CR 8 ;

each of X 6 to X 9 is independently CR 9 ;

each of R 1 to R 9 is independently a protium, a deuterium, or unsubstituted or deuterium-substituted C 1 -C 20 alkyl, and where each R 6 is identical to or different from each other when b is 2, 3 or 4;

a is 0 or 1;

b is 0, 1, 2, 3 or 4; and

a+b is no more than 4,

Formula 5A is:

where in Formula 5A,

each of R 21 and R 22 is independently protium, deuterium or an unsubstituted or substituted C 1 -C 20 alkyl; and

each of f and g is 0, 1, 2, 3 or 4,

Formula 7 is:

where in Formula 7,

X is CR 43 R 44 ;

each of Z 1 to Z 4 is independently CR 45 ;

R 41 is phenyl;

R 42 is protium, deuterium or tritium;

each of R 43 and R 44 is independently methyl;

R 45 is protium, deuterium, tritium or a phenyl-substituted carbazolyl group;

each of L 1 and L 2 is independently a single bond

and

p is 0, 1, 2, 3 or 4,

Formula 9 is:

where in Formula 9,

each of R 51 and R 52 is independently phenyl;

each of Y 1 , Y 2 and Y 3 is independently N;

each of R 61 , R 62 , and R 64 to R 68 is independently a protium, a deuterium or a tritium;

R 63 is phenyl;

each of R 69 and R 70 is independently hydrogen;

L is a single bond;

Z is O; and

each of r and s is independently 3.

2 . The organic light emitting diode of claim 1 , wherein L A has a structure represented by Formula 4A or Formula 4B:

where in Formulae 4A and 4B,

each of R 1 to R 6 and b is as defined in Formula 2;

each of R 11 to R 14 is independently protium, deuterium or unsubstituted or substituted C 1 -C 20 alkyl;

c is 0 or 1;

d is 0, 1, 2 or 3; and

e is 0, 1, 2, 3 or 4.

3 . The organic light emitting diode of claim 1 , wherein L A has a structure represented by Formula 4C or Formula 4D:

where in Formulae 4C and 4D,

each of R 1 to R 6 and b is as defined in Formula 2;

each of R 11 to R 14 is independently protium, deuterium or unsubstituted or substituted C 1 -C 20 alkyl;

c is 0 or 1;

d is 0, 1, 2 or 3; and

e is 0, 1, 2, 3 or 4.

4 . The organic light emitting diode of claim 1 , wherein the emissive layer includes:

a first emitting part disposed between the first and second electrodes and including a first emitting material layer;

a second emitting part disposed between the first emitting part and the second electrode and including a second emitting material layer; and

a first charge generation layer disposed between the first and second emitting parts,

wherein at least one of the first emitting material layer and the second emitting material layer includes the host and the dopant.

5 . The organic light emitting diode of claim 4 , wherein the second emitting material layer includes:

a first layer disposed between the first charge generation layer and the second electrode and

a second layer disposed between the first layer and the second electrode, and

wherein one of the first layer and the second layer includes the host and the dopant.

6 . The organic light emitting diode of claim 5 , wherein the second emitting material layer further includes a third layer disposed between the first layer and the second layer.

7 . The organic light emitting diode of claim 4 , wherein the emissive layer further includes:

a third emitting part disposed between the second emitting part and the second electrode and including a third emitting material layer, and

a second charge generation layer disposed between the second and third emitting parts.

8 . The organic light emitting diode of claim 7 , wherein the second emitting material layer includes:

a first layer disposed between the first charge generation layer and the second electrode and

a second layer disposed between the first layer and the second electrode,

wherein one of the first layer and the second layer includes the host and the dopant.

9 . An organic light emitting device, including:

a substrate; and

the organic light emitting diode of claim 1 disposed on the substrate.

10 . The organic light emitting diode of claim 1 , wherein the organometallic compound includes at least one selected from the group consisting of the following compounds:

11 . The organic light emitting diode of claim 1 , wherein the first host having the structure represented by Formula 7 includes:

12 . The organic light emitting diode of claim 1 , wherein the second host having the structure represented by Formula 9 includes:

13 . An organic light emitting diode including:

a first electrode;

a second electrode facing the first electrode; and

an emissive layer disposed between the first and second electrodes, the emissive layer includes:

a first emitting part disposed between the first and second electrodes and including a blue emitting material layer;

a second emitting part disposed between the first emitting part and the second electrode and including at least one emitting material layer; and

a first charge generation layer disposed between the first and second emitting parts,

wherein:

the at least one emitting material layer includes:

a host including:

a first host having a structure represented by Formula 7, and

a second host having a structure represented by Formula 9, and

a dopant including an organometallic compound having a structure represented by Formula 1:

Formula 1 is:

where in Formula 1,

L A has a structure represented by Formula 2;

L B is an auxiliary ligand having a structure represented by Formula 5A;

m is 1 or 2;

n is 1 or 2; and

m+n is 3,

Formula 2 is:

where in Formula 2,

X 1 is CR 7 ;

X 2 is CR 7 or N;

each of X 3 to X 5 is independently CR 8 ;

each of X 6 to X 9 is independently CR 9 ;

each of R 1 to R 9 is independently a protium, a deuterium, or unsubstituted or deuterium-substituted C 1 -C 20 alkyl, and where each R 6 is identical to or different from each other when b is 2, 3 or 4;

a is 0 or 1;

b is 0, 1, 2, 3 or 4; and

a+b is no more than 4,

Formula 5A is:

where in Formula 5A,

each of R 21 and R 22 is independently protium, deuterium or an unsubstituted or substituted C 1 -C 20 alkyl; and

each of f and g is 0, 1, 2, 3 or 4,

Formula 7 is:

where in Formula 7,

X is CR 43 R 44 ;

each of Z 1 to Z 4 is independently CR 45 ;

R 41 is phenyl;

R 42 is protium, deuterium or tritium;

each of R 43 and R 44 is independently methyl;

R 45 is protium, deuterium, tritium or a phenyl-substituted carbazolyl group;

each of L 1 and L 2 is independently a single bond; and

p is 0, 1, 2, 3 or 4,

Formula 9 is:

where in Formula 9,

each of R 51 and R 52 is independently phenyl;

each of Y 1 , Y 2 and Y 3 is independently;

each of R 61 , R 62 , and R 64 to R 68 is independently a protium, a deuterium or a tritium;

R 63 is phenyl;

each of R 69 and R 70 is independently hydrogen;

L is a single bond;

Z is O; and

each of r and s is independently 3.

14 . The organic light emitting diode of claim 13 , wherein L A has a structure represented by Formula 4A or Formula 4B:

where in Formulae 4A and 4B,

each of R 1 to R 6 and b is as defined in Formula 2;

each of R 11 to R 14 is independently protium, deuterium or unsubstituted or substituted C 1 -C 20 alkyl;

c is 0 or 1;

d is 0, 1, 2 or 3; and

e is 0, 1, 2, 3 or 4.

15 . The organic light emitting diode of claim 13 , wherein L A has a structure represented by Formula 4C or Formula 4D:

where in Formulae 4C and 4D,

each of R 1 to R 6 and b is as defined in Formula 2;

each of R 11 to R 14 is independently protium, deuterium or unsubstituted or substituted C 1 -C 20 alkyl;

c is 0 or 1;

d is 0, 1, 2 or 3; and

e is 0, 1, 2, 3 or 4.

16 . The organic light emitting diode of claim 13 , wherein the at least one emitting material layer further includes:

a first layer disposed between the first charge generation layer and the second electrode, the first layer including a red emitting material layer, and

a second layer disposed between the first layer and the second electrode, the second layer including the host and the dopant.

17 . The organic light emitting diode of claim 16 , wherein the at least one emitting material layer further includes a third layer disposed between the first layer and the second layer, and wherein the third layer includes a yellow green emitting material layer.

18 . The organic light emitting diode of claim 13 , wherein the emissive layer further includes a third emitting part disposed between the second emitting part and the second electrode and including a blue emitting material layer, and a second charge generation layer disposed between the second and third emitting parts.

19 . The organic light emitting diode of claim 18 , wherein the at least one emitting material layer further includes:

a first layer disposed between the first charge generation layer and the second electrode, the first layer including a red emitting material layer and

a second layer disposed between the first layer and the second electrode, the second layer including the host and the dopant.

20 . The organic light emitting diode of claim 19 , wherein the at least one emitting material layer further includes a third layer disposed between the first layer and the second layer, and wherein the third layer includes a yellow green emitting material layer.

21 . An organic light emitting device, including:

a substrate; and

the organic light emitting diode of claim 13 disposed on the substrate.