Compound and organic light emitting diode comprising same
A compound represented by Chemical Formula 1, and an organic light emitting device including the same, and the compound used as a material of an organic material layer of the organic light emitting device and providing enhanced efficiency, low driving voltage, and improved lifetime properties of the organic light emitting device.
1 . An organic light emitting device comprising:
a first electrode,
a second electrode provided to face the first electrode, and
one or more organic material layers provided between the first electrode and the second electrode,
wherein the one or more organic material layers include a light emitting layer, the light emitting layer includes:
a host material,
the host material includes a compound of any one of Chemical Formulae 1-1-2, 1-1-3, 1-2-2, or 1-2-3 as a first host, and
the compound of Chemical Formulae 1-1-2, 1-1-3, 1-2-2, or 1-2-3 is a red light emitting compound, and
further includes a compound selected from among the following Z-4 to Z-6, Z-8 to Z-12, Z-26, Z-30 to Z-32, and Z-35 as a second host:
wherein, in Chemical Formulae 1-1-2, 1-1-3, 1-2-2, and 1-2-3:
Y is O or S;
R 1 and R 2 are the same as or different from each other, and are each independently a substituted or unsubstituted aryl group;
R 5 and R 6 are the same as or different from each other, and are each independently hydrogen or deuterium, or adjacent groups bond to each other to form a ring;
c is an integer of 1 to 4;
d is an integer of 1 to 6; and
substituents in the parentheses are the same as or different from each other provided that c and d are 2 or greater,
2 . The organic light emitting device of claim 1 , wherein the compound of Chemical Formulae 1-1-2, 1-1-3, 1-2-2, or 1-2-3 is any one compound selected from the following compounds:
3 . The organic light emitting device of claim 1 , wherein the one or more organic material layers further include one, two or more layers selected from the group consisting of a second light emitting layer, a hole injection layer, a hole transfer layer, an electron injection layer, an electron transfer layer, an electron blocking layer and a hole blocking layer.
4 . The organic light emitting device of claim 1 , wherein the light emitting layer further includes a dopant, and the dopant is one selected from among the following compounds of Dp-1 to Dp5 and Dp-7 to Dp-38:
5 . The organic light emitting device of claim 1 , wherein R 1 and R 2 are the same as or different from each other, and are each independently a substituted or unsubstituted aryl group having 6 to 30 of carbon atoms.
6 . The organic light emitting device of claim 1 , wherein R 1 and R 2 are the same as or different from each other, and are each independently a substituted or unsubstituted phenyl group, or a substituted or unsubstituted naphthyl group.
7 . An organic light emitting device comprising:
a first electrode,
a second electrode provided to face the first electrode, and
one or more organic material layers provided between the first electrode and the second electrode,
wherein the one or more organic material layers include a light emitting layer, and the light emitting layer includes a host material comprising a first host and a second host, wherein:
the first host is a compound selected from among the following compounds:
and
the second host is a compound selected from among the following compounds:
8 . The organic light emitting device of claim 7 , wherein the one or more organic material layers further include one, two or more layers selected from the group consisting of a second light emitting layer, a hole injection layer, a hole transfer layer, an electron injection layer, an electron transfer layer, an electron blocking layer and a hole blocking layer.
9 . The organic light emitting device of claim 7 , wherein the light emitting layer further includes a dopant, and the dopant is one selected from among the following compounds of Dp-1 to Dp5 and Dp-7 to Dp-38: