Organic electric element comprising organic compound and electronic device thereof
An organic electric element according to an embodiment of the present disclosure includes a first electrode, a second electrode, and an organic material layer formed between the first electrode and the second electrode. The organic material layer includes compounds represented by Formula 1 and Formula 2 of the present invention, thereby the driving voltage the organic electric element can be lowered, and the luminous efficiency and the life time of the organic electric element can be improved.
1 . An organic electric element comprising:
a first electrode,;
a second electrode,; and
an organic material layer formed between the first electrode and the second electrode, the organic material layer comprising a phosphorescent light emitting layer, including a host, the host comprising a first compound represented by the following Formula 1 and a second compound represented by the following Formula 2:
wherein:
Ar 1 to Ar 3 , Ar 5 , Ar 6 and Ar 1 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, a C 3 -C 60 aliphatic ring, and L′—N(R a ) (R b ),
L 1 to L 6 , L 1 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,
X 1 is N—La—Ar a , O or S,
R 1 to 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 neighboring groups may be bonded to each other to form a ring,
n is 0 or 1, m is 1 or 2, and when m is 2, each of a plurality of L 2s , each of a plurality of L 3s , each of a plurality of Ares, and each of a plurality of Ar 3s are the same as or different from each other,
1 is an integer of 0 to 4, and 1 is not 0 when X 1 is O or S,
when 1 is an integer of 2 or more, each of a plurality of L's, each of a plurality of Ar 1 s are the same as or different from each other,
p, q, r and s are an integer of 0 to 4, and where each of these is an integer of 2 or more, each of R 1 s, each of R 2 s, each of R 3 s and each of R 4 s are the same as or different from each other,
L′ and L a 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, 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 combination thereof,
R a , R b and Ar a 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 to Ar 3 , Ar 5 , Ar 6 , Ar 1 , L′ to L a , L 1 , R 1 to R 4 , L′, L a , Ar a , R a , R b and the ring formed by linking neighboring groups to each other may be each 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 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 6 -C 20 arylthio, 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, a C 3 -C 20 aliphatic ring group, a C 7 -C 20 arylalkyl group, and a C 8 -C 20 arylalkenyl group.
2 . The organic electric element of claim 1 , wherein Formula 1 is represented by one of the following Formula 1-A-1 to Formula 1-A-5:
wherein:
L 1 to L 3 , Ar 2 , Ar 3 and m are the same as defined in claim 1 ,
L′ is selected from the group consisting of a single bond, a C 6 -C 20 arylene group, a fluorenylene group, a C 2 -C 20 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and a C 3 -C 20 aliphatic ring,
Ar′ 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,
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 alkylthio group, a C 1 -C 20 alkoxy group, a C 6 -C 20 aryloxy group, a C 6 -C 20 arylthio, 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 neighboring groups may be linked to each other to form a ring, and R′ and R″ may be linked to each other to form a ring, and
a and c are each an integer of 0-4, b is an integer of 0-3, and where each of these is an integer of 2 or more, each of R 1s and each of R 2s are the same as or different from each other.
3 . The organic electric element of claim 1 , wherein Formula 1 is represented by one of the following Formula 1-B-1 to Formula 1-B-4:
wherein:
L 1 to L 6 , Ar 2 , Ar 3 , Ar 5 and Ar 6 are the same as defined in claim 1 ,
L′ is selected from the group consisting of a single bond, a C 6 -C 20 arylene group, a fluorenylene group, a C 2 -C 20 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and a C 3 -C 20 aliphatic ring,
Ar′ 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,
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 alkylthio group, a C 1 -C 20 alkoxy group, a C 6 -C 20 aryloxy group, a C 6 -C 20 arylthio, 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 neighboring groups may be linked to each other to form a ring, and R′ and R″ may be linked to each other to form a ring, and
a and b are each an integer of 0-3, and where each of these is an integer of 2 or more, each of R 1s and each of R 2s are the same as or different from each other.
4 . The organic electric element of claim 1 , wherein Formula 1 is represented by one of the following Formula 1-C-1 to Formula 1-C-4:
wherein:
L 1 to L 6 , Ar 2 , Ar 3 , Ar 5 and Ar 6 are the same as defined in claim 1 ,
L′ is selected from the group consisting of a single bond, a C 6 -C 20 arylene group, a fluorenylene group, a C 2 -C 20 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and a C 3 -C 20 aliphatic ring,
Ar′ 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, and
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 alkylthio group, a C 1 -C 20 alkoxy group, a C 6 -C 20 aryloxy group, a C 6 -C 20 arylthio, 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 neighboring groups may be linked to each other to form a ring, and R′ and R″ may be linked to each other to form a ring, and
a is an integer of 0-4, b is an integer of 0-2, and where each of these is an integer of 2 or more, each of R 1s and each of R 2s are the same as or different from each other.
5 . The organic electric element of claim 1 , wherein Formula 1 is represented by one of the following Formula 1-E- 1 to Formula 1-E- 5 :
wherein:
L 1 to L 6 , Ar 2 , Ar 3 , Ar 5 and Ar 6 are the same as defined in claim 1 ,
R 3 to R 5 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 alkylthio group, a C 1 -C 20 alkoxy group, a C 6 -C 20 aryloxy group, a C 6 -C 20 arylthio, 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 neighboring groups may be linked to each other to form a ring, and
c is an integer of 0-5, d is an integer of 0-4, e is an integer of 0-3, and when each of these is an integer of 2 or more, each of R 3 s, each of Ras and each of R 5 s are the same as or different from each other.
6 . The organic electric element of claim 1 , wherein Formula 2 is represented by one of the following Formulas 2-A-1 to 2-A-3:
wherein R 1 to R 4 , L a , Ar a , L 1 , Ar 1 , p to s, 1 are the same as defined in claim 1 .
7 . The organic electric element of claim 1 , wherein Formula 2 is represented by Formula 2-B-1:
wherein:
R 1 , R 3 , R 4 , p, r and s are the same as defined in claim 1 ,
V is N—L a —Ar a , C(R′) (R″), O or S,
R 5 , 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 alkylthio group, a C 1 -C 20 alkoxy group, a C 6 -C 20 aryloxy group, a C 6 -C 20 arylthio, 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 neighboring groups may be linked to each other to form a ring, and R′ and R″ may be linked to each other to form a ring,
t is an integer of 0-7, and when t is an integer of 2 or more, each of R 5 s is the same as or different from each other,
L a is selected from the group consisting of a single bond, a C 6 -C 20 arylene group, a fluorenylene group, a C 2 -C 20 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and a C 3 -C 20 aliphatic ring, and
Ar a 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.
8 . The organic electric element of claim 1 , wherein the ring formed by linking neighboring R 1 s to each other, neighboring R 2 s to each other, neighboring R 3 s to each other, or neighboring R 4 s to each other is a ring represented by one of the following Formulas F-1 to F-4:
wherein:
the dotted line is the condensation site,
U is N—L a —Ar a , C(R′) (R″), O or S,
R 10 to R 13 , 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 alkylthio group, a C 1 -C 20 alkoxy group, a C 6 -C 20 aryloxy group, a C 6 -C 20 arylthio, 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 neighboring groups may be linked to each other to form a ring, and R′ and R″ may be linked to each other to form a ring, and
a1 and a3 are each an integer of 0-4, a2 and a4 are each an integer of 0-6, and where each of these is an integer of 2 or more, each of R 10 s, each of R 11 s, each of R 12 s and each of R 13 s are the same as or different from each other,
L a is selected from the group consisting of a single bond, a C 6 -C 20 arylene group, a fluorenylene group, a C 2 -C 20 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and a C 3 -C 20 aliphatic ring, and
Ar a 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.
9 . The organic electric element of claim 1 , wherein R 1 to R 4 are one of the following Formula S-1 or S-2:
wherein:
Y is N—L a —Ar a , C(R′) (R″), O or S,
Q 1 to Q 5 are each independently N or C(R′),
L A , L B and L a are each independently from the group consisting of a single bond, a C 6 -C 20 arylene group, a fluorenylene group, a C 2 -C 20 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and a C 3 -C 20 aliphatic ring,
Ar a 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,
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 alkylthio group, a C 1 -C 20 alkoxy group, a C 6 -C 20 aryloxy group, a C 6 -C 20 arylthio, 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, neighboring groups may be linked to each other to form a ring, and R′ and R″ may be linked to each other to form a ring,
A ring and B ring are each selected from the following structures:
wherein:
* indicates a condensed position,
Vs are each N or C(R′), at least one of Vs is N,
W 1 and W 2 are each independently a single bond, N—L a —Ar a , C(R′) (R″), O or S, and
R′, R″, L a and Ar a are the same as defined in the above.
10 . The organic electric element of claim 1 , wherein Formula 2 is represented by one of the following Formula 2-C-1 to Formula 2-C-5:
wherein:
R 1 to R 4 , X 1 , L 1 , p to s are the same as defined in claim 1 ,
Y is N—L a —Ar a , C(R′) (R″), O or S,
Vs are each independently N or C(R′),
Re, 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 alkylthio group, a C 1 -C 20 alkoxy group, a C 6 -C 20 aryloxy group, a C 6 -C 20 arylthio, 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 neighboring R's may be linked to each other to form a ring, and R′ and R″ may be linked to each other to form a ring,
L a is independently selected from the group consisting of a single bond, a C 6 -C 20 arylene group, a fluorenylene group, a C 2 -C 20 heterocyclic group comprising at least one heteroatom selected from the group consisting of O, N, S, Si and P, and a C 3 -C 20 aliphatic ring, and
Ar a 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.
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 1 , wherein the compound represented by Formula 2 is one of the following compounds:
13 . The organic electric element of claim 1 , wherein the weight ratio of the first compound to the second compound is 2:8 to 8:2.
14 . The organic electric element of claim 1 , further comprising a layer for improving luminous efficiency, wherein the layer for improving luminous efficiency is formed on one side of both sides of the first electrode or the second electrode and the one side is not facing the organic material layer.
15 . The organic electric element of claim 1 , 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 first electrode.
16 . The organic electric element of claim 15 , wherein the organic material layer further comprises a charge generation layer formed between the two or more stacks.
17 . The organic electric element of claim 1 , wherein the organic material layer further comprises one or more hole transport band layers formed between the light-emitting layer and the anode, and the hole transport band layers comprise at least one of a hole transport layer and an emission auxiliary layer comprising the formula 1.
18 . An electronic device comprising:
a display device comprising organic electric element of claim 1 ; and
a control unit for driving the display device.
19 . The electronic device of claim 18 , wherein the organic electric element is an organic electroluminescent element, an organic solar cell, an organic photo conductor, an organic transistor, an element for monochromatic illumination or a quantum dot display.