Nitrogen-containing compound and organic electroluminescence device including the same
A nitrogen-containing compound and an organic electroluminescence device including the same, the nitrogen-containing compound being represented by the following Formula 1:
1. A nitrogen-containing compound represented by the following Formula 1:
wherein, in Formula 1,
X 1 to X 6 are each independently CR 1 or N, provided that one or two of X 1 to X 6 are N and the others are CR 1 ,
each R 1 is independently a bond to L, a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms,
L is a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms,
n is 1 or 2, and
when only one of X 1 to X 6 is N, Du is a group represented by one selected from the following Formulae 8 to 9 and 13 to 16, and
when only two of X 1 to X 6 are N, Du is a group represented by one selected from the following Formulae 7 to 9 and 12 to 16,
wherein, in Formulae 7 to 9 and 12 to 16,
represents a bonding site with L of Formula 1.
2. The nitrogen-containing compound as claimed in claim 1 , wherein L is a substituted or unsubstituted phenylene group.
3. The nitrogen-containing compound as claimed in claim 1 , wherein the nitrogen-containing compound represented by Formula 1 is represented by the following Formula 3:
wherein, in Formula 3, L, Du, R 1 , and n are defined the same as those of Formula 1.
4. The nitrogen-containing compound as claimed in claim 1 , wherein the nitrogen-containing compound represented by Formula 1 is represented by the following Formula 4:
wherein, in Formula 4, L, Du, R 1 , and n are defined the same as those of Formula 1.
5. The nitrogen-containing compound as claimed in claim 1 , wherein the nitrogen-containing compound represented by Formula 1 is represented by the following Formula 5:
wherein, in Formula 5, L, Du, R 1 , and n are defined the same as those of Formula 1.
6. A nitrogen-containing compound, wherein the nitrogen-containing compound is one of the following Compounds:
7. An organic electroluminescence device, comprising:
a first electrode;
a hole transport region on the first electrode;
an emission layer on the hole transport region;
an electron transport region on the emission layer; and
a second electrode on the electron transport region,
wherein the emission layer includes a host and a dopant, the dopant being included in an amount less than that of the host and being a nitrogen-containing compound represented by the following Formula 1:
wherein, in Formula 1,
X 1 to X 6 are each independently CR 1 or N provided that one or two of X 1 to X 6 are N and the others are CR 1 ,
each R 1 is independently a bond to L, a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms,
L is a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms,
n is 1 or 2, and
Du is a group represented by one selected from the following Formulae 7-9 and 12-16, when only one of X 1 to X 6 is N, Du is a group represented by the following Formulae 8 to 9 and 13 to 16, and
when only two of X 1 to X 6 are N, Du is a group represented by one selected from the following Formulae 7 to 9 and 12 to 16,
wherein, in Formulae 7-9 and 12-16,
represents a bonding site with L of Formula 1, or
the nitrogen-containing compound is represented by the following Formula 5:
wherein, in Formula 5, L, Du, R 1 , and n are defined the same as those of Formula 1.
8. The organic electroluminescence device as claimed in claim 7 , wherein an absolute value of a difference between a singlet energy level and a triplet energy level of the nitrogen-containing compound represented by Formula 1 or a triplet energy level of the nitrogen-containing compound represented by Formula 5 is about 0.2 eV or less.
9. The organic electroluminescence device as claimed in claim 7 , wherein L is a substituted or unsubstituted phenylene group.
10. The organic electroluminescence device as claimed in claim 7 , wherein the nitrogen-containing compound represented by Formula 1 is represented by the following Formula 3:
wherein, in Formula 3, L, Du, R 1 , and n are defined the same as those of Formula 1.
11. The organic electroluminescence device as claimed in claim 7 , wherein the nitrogen-containing compound represented by Formula 1 is represented by the following Formula 4:
wherein, in Formula 4, L, Du, R 1 , and n are defined the same as those of Formula 1.
12. The organic electroluminescence device as claimed in claim 7 , wherein the nitrogen-containing compound is represented by the following Formula 6:
wherein, in Formula 6,
R 12 is a hydrogen atom, or substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and
X 1 to X 6 are defined the same as those of Formula 1.
13. The organic electroluminescence device as claimed in claim 7 , wherein the nitrogen-containing compound represented by Formula 1 is one of the following Compounds:
14. The organic electroluminescence device as claimed in claim 7 , wherein:
the hole transport region includes a hole injection layer and a hole transport layer, and
the electron transport region includes an electron injection layer and an electron transport layer.
15. A nitrogen-containing compound represented by one of the following Compounds 53, 55, 61, 66, 67, 69, 70, or 71:
16. An organic electroluminescence device, comprising:
a first electrode;
a hole transport region on the first electrode;
an emission layer on the hole transport region;
an electron transport region on the emission layer; and
a second electrode on the electron transport region,
wherein the emission layer includes the nitrogen-containing compound as claimed in claim 15 .
17. The organic electroluminescence device as claimed in claim 16 , wherein an absolute value of a difference between a singlet energy level and a triplet energy level of the nitrogen-containing compound is about 0.2 eV or less.
18. The organic electroluminescence device as claimed in claim 16 , wherein the nitrogen containing compound is a dopant in the emission layer.