Organic electric element comprising compound for organic electric element and an electronic device thereof
An organic electric element according to an embodiment of the present disclosure includes an anode, a cathode, and an organic material layer formed between the anode and the cathode. The organic material layer includes a compound of Formula 1. The driving voltage of the organic electric element can be lowered, and the luminous efficiency and life time of the organic electric element can be improved.
1. An organic electric element comprising:
an anode;
a cathode; and
an organic material layer formed between the anode and the cathode, the organic material layer comprising:
a light emitting layer;
a hole transport layer formed between the light emitting layer and the anode; and
an emission-auxiliary layer formed between the hole transport layer and the light emitting layer,
wherein the hole transport layer, the emission-auxiliary layer and the light emitting layer comprise a compound of Formula 1, respectively:
wherein:
R 1 and R 2 are each independently selected from the group consisting of hydrogen, deuterium, halogen, a cyano group, a nitro group, a C 6 -C 60 aryl group, a fluorenyl group, a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, a C 3 -C 60 aliphatic ring, a C 1 -C 30 alkyl group, a C 2 -C 30 alkenyl group, a C 2 -C 30 alkynyl group, a C 1 -C 30 alkoxyl group, a C 6 -C 30 aryloxy group and a C 6 -C 30 arylthio group, and adjacent groups may be bonded to each other to form a ring,
a and b are each an integer of 0 to 4, and when each of these is an integer of 2 or more, a plurality of R 1 s are each the same as or different from each other and a plurality of R 2 s are each the same as or different from each other,
R 3 and R 4 are each independently selected from the group consisting of hydrogen, deuterium, halogen, a cyano group, a nitro group, a C 6 -C 60 aryl group, a fluorenyl group, a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, a C 3 -C 60 aliphatic ring, a C 1 -C 30 alkyl group, a C 2 -C 30 alkenyl group, a C 2 -C 30 alkynyl group, a C 1 -C 30 alkoxyl group, a C 6 -C 30 aryloxy group and -L′-N(R a )(R b ), and R 3 and R 4 may be bonded to each other to form a ring,
Ar 1 to Ar 4 are each independently selected from the group consisting of a C 6 -C 60 aryl group, a fluorenyl group, a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and a C 3 -C 60 aliphatic ring,
L 1 to L 6 are each independently selected from the group consisting of a single bond, a C 6 -C 60 arylene group, a fluorenylene group, a C 3 -C 60 aliphatic ring, and a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P,
i and j are each an integer of 0 to 2, and when both i and j are 0, one of R 3 and R 4 contain -L′-N(R a )(R b ), with a proviso that i+j is an integer greater than or equal to 1 for the compound of Formula 1 included in the light emitting layer,
when i is an integer of 2, a plurality of Ar 1 s, a plurality of Ar 2 s, a plurality of L 1 s, a plurality of L 2 s, a plurality of L 3 s are the same as or different from each other,
when j is an integer of 2, a plurality of Ar 3 s, a plurality of Ar 4 s, a plurality of L 4 s, a plurality of L 5 s, a plurality of L 6 s are the same as or different from each other,
L′ is selected from the group consisting of a single bond, a C 6 -C 60 arylene group, a fluorenylene group, a C 3 -C 60 aliphatic ring, and a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P,
R a and R b are each independently selected from the group consisting of a C 6 -C 60 aryl group, a fluorenyl group, a C 3 -C 60 aliphatic ring, and a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and
R 1 to R 4 , Ar 1 to Ar 4 , L 1 to L 6 , L′, R a , R b , the ring formed by adjacent groups or by R 3 and R 4 may be each optionally substituted with one or more substituents selected from the group consisting of deuterium, halogen, a silane group unsubstituted or substituted with a C 1 -C 20 alkyl group or a C 6 -C 20 aryl group, a siloxane group, a boron group, a germanium group, a cyano group, a nitro group, a C 1 -C 20 alkylthio group, a C 1 -C 20 alkoxy group, a C 6 -C 20 aryloxy group, a C 1 -C 20 alkyl group, a C 2 -C 20 alkenyl group, a C 2 -C 20 alkynyl group, a C 6 -C 20 aryl group, a C 6 -C 20 aryl group substituted with deuterium, a fluorenyl group, a C 2 -C 20 heterocyclic group containing at least one heteroatom of O, N, S, Si, and P, a C 3 -C 20 aliphatic ring group, a C 7 -C 20 arylalkyl group, C 8 -C 20 arylalkenyl group and -L′-N(R a )(R b ).
2. The organic electric element of claim 1 , wherein Formula 1 is represented by one of Formula 2 to Formula 6:
wherein:
R 1 to R 4 , Ar 1 to Ar 4 , and L 1 to L 6 are the same as defined in claim 1 ,
c is an integer of 0 to 3, and when c is an integer of 2 or more, a plurality of R 1 s are each the same as or different from each other,
d is an integer of 0 to 4, and when d is an integer of 2 or more, a plurality of R 2 s are each the same as or different from each other,
e is an integer of 0 to 3, and when e is an integer of 2 or more, a plurality of R 2 s are each the same as or different from each other,
f is an integer of 0 to 2, and when f is an integer of 2 or more, a plurality of R 1 s are each the same as or different from each other, and
g is an integer of 0 to 2, and when c is an integer of 2 or more, a plurality of R 2 s are each the same as or different from each other.
3. The organic electric element of claim 1 , wherein the compound of Formula 1 is a compound represented by one of Formula 7 to Formula 11:
wherein:
R 1 to R 4 , Ar 1 to Ar 4 , and L 1 to L 6 are the same as defined in claim 1 ,
X is O, S, C(R′)(R″) or N(R 3 ),
R 1 , R 2 , R′ and R″ are each independently selected from the group consisting of hydrogen, deuterium, halogen, a silane group unsubstituted or substituted with a C 1 -C 20 alkyl group or a C 6 -C 20 aryl group, a cyano group, a nitro group, a C 1 -C 20 alkoxy group, a C 6 -C 20 aryloxy group, a C 1 -C 20 alkyl group, a C 2 -C 20 alkenyl group, a C 2 -C 20 alkynyl group, a C 6 -C 20 aryl group, a fluorenyl group, a C 2 -C 20 heterocyclic group containing at least one heteroatom of O, N, S, Si, and P, and a C 3 -C 20 aliphatic ring group, and adjacent R 1 s or adjacent R 2 s may be bonded to each other to form a ring, and R′ and R″ may be bonded to each other to form a ring,
R 3 is selected from the group consisting of a C 6 -C 20 aryl group, a fluorenyl group, a C 2 -C 20 heterocyclic group containing at least one heteroatom of O, N, S, Si, and P, and a C 3 -C 20 aliphatic ring group,
c is an integer of 0 to 3, and when c is an integer of 2 or more, a plurality of R 1 s are each the same as or different from each other,
d is an integer of 0 to 4, and when d is an integer of 2 or more, a plurality of R 2 s are each the same as or different from each other,
e is an integer of 0 to 3, and when e is an integer of 2 or more, a plurality of R 2 s are each the same as or different from each other,
f is an integer of 0 to 2, and when f is an integer of 2 or more, a plurality of R 1 s are each the same as or different from each other,
g is an integer of 0 to 2, and when c is an integer of 2 or more, a plurality of R 2 s are each the same as or different from each other,
h is an integer of 0 to 4, and when h is an integer of 2 or more, a plurality of R 1 s are each the same as or different from each other, and
i is an integer of 0 to 3, and when i is an integer of 2 or more, a plurality of R 2 s are each the same as or different from each other.
4. The organic electric element of claim 1 , wherein the light emitting layer further comprises at least one of a compound represented by Formula 12 and a compound represented by Formula 13:
wherein:
Z 1 to Z 5 are each independently N or C(R 3 ), and at least one of Z 1 to Z 5 is N,
Z 6 to Z 8 are each independently N or C(R 3 ), and at least one of Z 6 to Z 8 is N,
L 1 is selected from the group consisting of a single bond, a C 6 -C 60 arylene group, a fluorenylene group, a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and a C 3 -C 60 aliphatic ring,
Ar 1 is selected from the group consisting of a C 6 -C 60 aryl group, a fluorenyl group, a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and a C 3 -C 60 aliphatic ring,
C ring is selected from the group consisting of a C 6 -C 60 aromatic ring, a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and a C 3 -C 60 aliphatic ring, and C ring may be further substituted with one or more R 4 ,
R 3 and R 4 are each independently selected from the group consisting of hydrogen, deuterium, halogen, a cyano group, a nitro group, a C 6 -C 60 aryl group, a fluorenyl group, a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and a C 3 -C 60 aliphatic ring, a C 1 -C 30 alkyl group, a C 2 -C 30 alkenyl group, a C 2 -C 30 alkynyl group, a C 1 -C 30 alkoxy group, a C 6 -C 30 aryloxy group, and -L′-N(R a )(R b ), and adjacent R 3 s may be bonded to each other to form a ring,
L′ is selected from the group consisting of a single bond, a C 6 -C 60 arylene group, a fluorenylene group, a C 3 -C 60 aliphatic ring, and a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P,
R a and R b are each independently selected from the group consisting of a C 6 -C 60 aryl group, a fluorenyl group, a C 3 -C 60 aliphatic ring, and a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and
Ar 1 , L 1 , L′, R 3 , R 4 , R a , R b , the ring formed by adjacent R 3 s may be each optionally substituted with one or more substituents selected from the group consisting of deuterium, halogen, a silane group unsubstituted or substituted with a C 1 -C 20 alkyl group or a C 6 -C 20 aryl group, a siloxane group, a boron group, a germanium group, a cyano group, a nitro group, a C 1 -C 20 alkylthio group, a C 1 -C 20 alkoxy group, a C 6 -C 20 aryloxy group, a C 1 -C 20 alkyl group, a C 2 -C 20 alkenyl group, a C 2 -C 20 alkynyl group, a C 6 -C 20 aryl group, a C 6 -C 20 aryl group substituted with deuterium, a fluorenyl group, a C 2 -C 20 heterocyclic group containing at least one heteroatom of O, N, S, Si, and P, a C 3 -C 20 aliphatic ring group, a C 7 -C 20 arylalkyl group, C 8 -C 20 arylalkenyl group and -L′-N(R a )(R b ).
5. The organic electric element of claim 4 , wherein the light emitting layer comprises a compound represented by one of Formula 13-1 to Formula 13-6:
wherein:
Z 6 to Z 8 , L 1 , Ar 1 , R 4 are the same as defined in claim 4 ,
A and B are each independently O, N, S or C(R 5 )(R 6 ), l and m are each an integer of 0 or 1, and at least one of l and m is 1, and
is an integer of 0 to 4, p is an integer of 0 to 6, q is an integer of 0 to 8, and when o, p and q are each an integer of 2 or more, a plurality of R 4 s are each the same as or different from each other.
6. The organic electric element of claim 2 , wherein the hole transport layer comprises the compound of Formula 2.
7. The organic electric element of claim 3 , wherein the hole transport layer comprises the compound of Formula 7.
8. The organic electric element of claim 2 , wherein the hole transport layer and the emission-auxiliary layer comprise the compound of Formula 2.
9. The organic electric element of claim 2 , wherein the hole transport layer, the emission-auxiliary layer and the light emitting layer comprise the compound of Formula 2.
10. The organic electric element of claim 4 , wherein the light emitting layer comprises the compound of Formula 12.
11. The organic electric element of claim 1 , wherein the compound represented by Formula 1 is one of the following compounds:
12. The organic electric element of claim 4 , wherein the compound represented by Formula 12 is one of the following compounds:
13. The organic electric element of claim 4 , wherein the compound represented by Formula 13 is one of the following compounds:
14. An organic electric element, comprising:
an anode;
a cathode; and
an organic material layer formed between the anode and the cathode, the organic material layer comprising:
a light emitting layer;
a hole transport layer formed between the light emitting layer and the anode; and
an emission-auxiliary layer formed between the hole transport layer and the light emitting layer,
wherein the hole transport layer, the emission-auxiliary layer and the light emitting layer comprise a compound of Formula 1, respectively:
wherein:
R 1 and R 2 are each independently selected from the group consisting of hydrogen, deuterium, halogen, a cyano group, a nitro group, a C 6 -C 60 aryl group, a fluorenyl group, a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, a C 3 -C 60 aliphatic ring, a C 1 -C 30 alkyl group, a C 2 -C 30 alkenyl group, a C 2 -C 30 alkynyl group, a C 1 -C 30 alkoxyl group, a C 6 -C 30 aryloxy group and a C 6 -C 30 arylthio group, and adjacent groups may be bonded to each other to form a ring,
a and b are each an integer of 0 to 4, and when each of these is an integer of 2 or more, a plurality of R 1 s are each the same as or different from each other and a plurality of R 2 s are each the same as or different from each other,
R 3 and R 4 are each independently selected from the group consisting of hydrogen, deuterium, halogen, a cyano group, a nitro group, a C 6 -C 60 aryl group, a fluorenyl group, a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, a C 3 -C 60 aliphatic ring, a C 1 -C 30 alkyl group, a C 2 -C 30 alkenyl group, a C 2 -C 30 alkynyl group, a C 1 -C 30 alkoxyl group, a C 6 -C 30 aryloxy group and -L′-N(R a )(R b ), and R 3 and R 4 may be bonded to each other to form a ring,
Ar 1 to Ar 4 are each independently selected from the group consisting of a C 6 -C 60 aryl group, a fluorenyl group, a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and a C 3 -C 60 aliphatic ring,
L 1 to L 6 are each independently selected from the group consisting of a single bond, a C 6 -C 60 arylene group, a fluorenylene group, a C 3 -C 60 aliphatic ring, and a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P,
i and j are each an integer of 0 to 2, and when both i and j are 0, one of R 3 and R 4 contain -L′-N(R a )(R b ),
when i is an integer of 2, a plurality of Ar 1 s, a plurality of Ar 2 s, a plurality of L 1 s, a plurality of L 2 s, a plurality of L 3 s are the same as or different from each other,
when j is an integer of 2, a plurality of Ar 3 s, a plurality of Ar 4 s, a plurality of L 4 s, a plurality of L 5 s, a plurality of L 6 s are the same as or different from each other,
L′ is selected from the group consisting of a single bond, a C 6 -C 60 arylene group, a fluorenylene group, a C 3 -C 60 aliphatic ring, and a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P,
R a and R b are each independently selected from the group consisting of a C 6 -C 60 aryl group, a fluorenyl group, a C 3 -C 60 aliphatic ring, and a C 2 -C 60 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and
R 1 to R 4 , Ar 1 to Ar 4 , L 1 to L 6 , L′, R a , R b , the ring formed by adjacent groups or by R 3 and R 4 may be each optionally substituted with one or more substituents selected from the group consisting of deuterium, halogen, a silane group unsubstituted or substituted with a C 1 -C 20 alkyl group or a C 6 -C 20 aryl group, a siloxane group, a boron group, a germanium group, a cyano group, a nitro group, a C 1 -C 20 alkylthio group, a C 1 -C 20 alkoxy group, a C 6 -C 20 aryloxy group, a C 1 -C 20 alkyl group, a C 2 -C 20 alkenyl group, a C 2 -C 20 alkynyl group, a C 6 -C 20 aryl group, a C 6 -C 20 aryl group substituted with deuterium, a fluorenyl group, a C 2 -C 20 heterocyclic group containing at least one heteroatom of O, N, S, Si, and P, a C 3 -C 20 aliphatic ring group, a C 7 -C 20 arylalkyl group, C 8 -C 20 arylalkenyl group and -L′-N(R a )(R b ),
wherein the organic material layer comprises two or more stacks, and the stacks each comprise a hole transport layer, a light emitting layer, and an electron transport layer formed sequentially on the anode.
15. The organic electric element of claim 14 , wherein the organic material layer further comprises a charge generation layer formed between the two or more stacks.
16. The organic electric element of claim 1 , further comprising a layer for improving luminous efficiency on one side of the anode and/or the cathode, wherein the one side is not facing the organic material layer.
17. An electronic device comprising a display device and a control unit for driving the display device, wherein the display device comprises the organic electric element of claim 1 .
18. The electronic device of claim 17 , wherein the organic electric element is selected from the group consisting of an organic light emitting diode, an organic solar cell, an organic photo conductor, an organic transistor, an element for monochromatic illumination and a quantum dot display.