Organic light emitting diode device

1. An organic light emitting diode device comprising:

an anode;

a cathode facing the anode;

an emission layer between the anode and the cathode; and

an electron transport layer (ETL) between the cathode and the emission layer,

where the ETL comprises a compound represented by Chemical Formula 1, and the emission layer comprises a compound represented by Chemical Formula 2 as a host material:

wherein, in Chemical Formula 1,

L 1 is a substituted or unsubstituted C6 to C30 arylono group or a substituted or unsubstituted C2 to C30 heteroarylene group,

R 1 to R 4 are each independently selected from the group consisting of a hydrogen atom, a heavy hydrogen atom, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C1 to C30 heteroaryl group, a substituted or unsubstituted C1 to C30 amine group, and a substituted or unsubstituted silyl group,

n1 is an integer ranging from 0 to 2, and

n2 and n3 are each independently integers ranging from 0 to 3; and

wherein, in Chemical Formula 2,

L 2 is a substituted or unsubstituted C6 to C30 arylene group or a substituted or unsubstituted C2 to C30 heteroarylene group,

R 5 is selected from the group consisting of a hydrogen atom, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C1 to C30 heteroaryl group, a substituted or unsubstituted C1 to C30 amine group, and a substituted or unsubstituted silyl group,

R 6 and R 7 are each independently selected from the group consisting of a hydrogen atom, a heavy hydrogen atom, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C1 to C30 heteroaryl group, a substituted or unsubstituted C1 to C30 amine group, and a substituted or unsubstituted siiyl group,

m1 is an integer ranging from 0 to 2, and

m2 and m3 are each independently integers ranging from 0 to 4

wherein the compound represented by Chemical Formula 2 excludes the following compound:

2. The organic light emitting diode device of claim 1 , wherein

R 1 and R 2 are each independently a hydrogen atom, or a substituted or unsubstituted C6 to C30 aryl group,

L 1 is a substituted or unsubstituted C6 to C30 arylene group,

n1 is 1, and

n2 and n3 are each 0.

3. The organic light emitting diode device of claim 2 , wherein L 1 is a substituted or unsubstituted phenylene group or a substituted or unsubstituted naphthylene group.

4. The organic light emitting diode device of claim 1 , wherein the compound represented by Chemical Formula 1 is represented by one of Chemical Formulae 1-1 to 1-8:

5. The organic light emitting diode device of claim 1 , wherein

L 2 is a substituted or unsubstituted C6 to C30 arylene group,

R 5 is selected from the group consisting of a hydrogen atom, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C1 to C30 heteroaryl group, a substituted or unsubstituted C1 to C30 amine group, and a substituted or unsubstituted silyl group,

m1 is an integer ranging from 0 to 2, and

m2 and m3 are each independently an integer of 0.

6. The organic light emitting diode device of claim 5 , wherein L 2 is a substituted or unsubstituted phenylene group or a substituted or unsubstituted naphthylene group.

7. The organic light emitting diode device of claim 1 , wherein the compound represented by Chemical Formula 2 is represented by one of Chemical Formulae 2-1 to 2-6 and 2-8 to 2-24:

8. The organic light emitting diode device of claim 1 , wherein the emission layer comprises the compound represented by Chemical Formula 2 as a host material, and further comprises a dopant material.

9. The organic light emitting diode device of claim 8 , wherein the dopant material comprises a phosphorescent dopant material.

10. The organic light emitting diode device of claim 8 , wherein the host material and the dopant material are provided in a weight ratio ranging from about 6:4 to about 9:1.