Organic electroluminescent material and organic electroluminescent device including the same
A material for an organic electroluminescent device is represented by the following General Formula (1). The organic electroluminescent device may be driven at a low voltage and may have high emission efficiency and long life.
1. An organic electroluminescent (EL) device, comprising:
an anode;
a cathode;
an emission layer between the anode and the cathode; and
a plurality of layers between the emission layer and the anode, at least one layer selected from the plurality of layers comprising a material for an organic EL device,
wherein the plurality of layers comprises a hole injection layer and one hole transport layer, and
wherein the material is represented by General Formula (1):
wherein in General Formula (1),
X is selected from CR 12 R 13 and SiR 14 R 15 ,
R 1 to R 16 are each independently selected from a substituted or unsubstituted aryl group having 6 to 30 carbon atoms for forming a ring, a substituted or unsubstituted heteroaryl group having 1 to 30 carbon atoms for forming a ring, an alkyl group having 1 to 15 carbon atoms, a silyl group, a halogen atom, a hydrogen atom and a deuterium atom,
L is selected from a direct linkage, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms for forming a ring, a substituted or unsubstituted heteroarylene group having 1 to 30 carbon atoms for forming a ring and a divalent silyl group, and
Ar is selected from an unsubstituted aryl group having 6 to 14 carbon atoms for forming a ring or an aryl group having 6 to 14 carbon atoms for forming a ring substituted with an aryl group having 6 to 14 carbon atoms for forming a ring.
2. The organic EL device of claim 1 , wherein in General Formula (1), R 2 is a phenyl group, and the material is represented by General Formula (2):
3. The organic EL device of claim 1 , wherein in General Formula (1), R 1 and R 3 are each independently selected from a hydrogen atom and a deuterium atom, R 2 is a phenyl group, and R 5 forms a direct linkage with N, and the material is represented by General Formula (3):
4. The organic EL device of claim 1 , wherein a plurality of adjacent groups selected from R 1 to R 16 are coupled to each other to form a saturated or unsaturated ring.
5. The organic EL device of claim 1 , wherein in General Formula (1), when X is selected from CR 12 R 13 and SiR 14 R 15 , R 5 is coupled at position 2 as shown in General Formula (5):
wherein in General Formula (5), H represents one or more substituents of X.
6. The organic EL device of claim 1 , wherein the material for an organic EL device comprises at least one selected from Compounds 13 to 18 and 21 to 24:
7. The organic EL device of claim 1 , wherein the emission layer comprises an anthracene derivative or a pyrene derivative.
8. The organic EL device of claim 1 , wherein the emission layer comprises a compound represented by General Formula (6):
wherein in General Formula (6), R 21 to R 30 are each independently selected from a substituted or unsubstituted aryl group having 6 to 30 carbon atoms for forming a ring, a substituted or unsubstituted heteroaryl group having 1 to 30 carbon atoms for forming a ring, an alkyl group having 1 to 15 carbon atoms, a silyl group, a halogen atom, a hydrogen atom and a deuterium atom,
“a” and “b” are each independently an integer from 0 to 5, and
a plurality of adjacent groups selected from R 21 to R 30 are coupled to each other to form a saturated or unsaturated ring.
9. The organic EL device of claim 1 , wherein the emission layer comprises at least one compound selected from Compounds a-1 to a-12:
10. A material for an organic electroluminescent (EL) device is at least one selected from Compounds 13 to 24: