Organic electroluminescence device
An organic electroluminescent (EL) device including an anode; an emission layer for obtaining luminescence via a singlet excited state; and a laminated structure between the anode and the emission layer, the laminated structure including at least three layers having different components, wherein the laminated structure includes a first layer including a hole transport compound, the hole transport compound being obtained by doping an electron accepting compound having a lowest unoccupied molecular orbital (LUMO) level of about −9.0 eV to about −4.0 eV; and a second layer between the first layer and the emission layer, the second layer being closer to the emission layer than the first layer and including a compound represented by the following Formula 1:
1. An organic electroluminescent (EL) device, comprising:
an anode;
an emission layer for obtaining luminescence via a singlet excited state; and
a laminated structure between the anode and the emission layer, the laminated structure including at least three layers having different components,
wherein the laminated structure includes:
a first layer including a hole transport compound, the hole transport compound being doped with an electron accepting compound that has a lowest unoccupied molecular orbital (LUMO) level of about −9.0 eV to about −4.0 eV;
a second layer between the first layer and the emission layer, the second layer being closer to the emission layer than the first layer and including a compound represented by the following Formula 1,
a third layer between the first layer and the second layer, the third layer includes a compound represented by the following Formula 2:
wherein, in Formula 1,
Ar 5 to Ar 8 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 5 to 50 ring carbon atoms,
adjacent Ar 7 s can be combined to form a ring, and adjacent Ar 8 s can be combined to form a ring,
each m is independently an integer of 0 to 4, and
L 2 and L 3 are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 18 ring carbon atoms, or a substituted or unsubstituted heteroarylene group having 5 to 15 ring carbon atoms,
wherein, in Formula 2,
Ar 1 , Ar 2 , and Ar 3 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 5 to 50 ring carbon atoms,
Ar 4 is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 5 to 50 ring carbon atoms, or a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, and
L 1 is a single bond, a substituted or unsubstituted arylene group having 6 to 18 ring carbon atoms, or a substituted or unsubstituted heteroarylene group having 5 to 15 ring carbon atoms.
2. The organic EL device as claimed in claim 1 , wherein the first layer includes a compound represented by Formula 2.
3. The organic EL device as claimed in claim 1 , wherein the emission layer includes an anthracene-containing compound represented by the following Formula 3:
wherein, in Formula 3,
each Ar 9 is independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 50 ring carbon atoms, a substituted or unsubstituted arylthio group having 6 to 50 ring carbon atoms, a substituted or unsubstituted alkoxycarbonyl group having 2 to 50 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 5 to 50 ring carbon atoms, a substituted or unsubstituted silyl group, a carboxyl group, a halogen atom, a cyano group, a nitro group, or a hydroxyl group, and
n is an integer of 1 to 10.
4. The organic EL device as claimed in claim 3 , wherein the second layer includes one of the following Compounds 1 to 22:
5. The organic EL device as claimed in claim 1 , wherein the third layer includes one of the following Compounds 23 to 38:
6. The organic EL device as claimed in claim 3 , wherein the anthracene-containing compound includes one of the following Compounds a-1 to a-12:
7. An organic electroluminescent (EL) device, comprising:
an anode;
an emission layer for obtaining luminescence via a singlet excited state; and
a laminated structure between the anode and the emission layer, the laminated structure including at least three layers having different components,
wherein the laminated structure includes:
a first layer including an electron accepting compound having a lowest unoccupied molecular orbital (LUMO) level of about −9.0 eV to about −4.0 eV as a main component;
a second layer between the first layer and the emission layer, the second layer being adjacent to the emission layer and including a compound represented by the following Formula 1, and
a third layer between the first layer and the second layer, the third layer includes a compound represented by the following Formula 2:
wherein, in Formula 1,
Ar 5 to Ar 8 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 5 to 50 ring carbon atoms,
adjacent Ar 7 s can be combined to form a ring, and adjacent Ar 8 s can be combined to form a ring,
each m is independently an integer of 0 to 4, and
L 2 and L 3 are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 18 ring carbon atoms, or a substituted or unsubstituted heteroarylene group having 5 to 15 ring carbon atoms,
wherein, in Formula 2,
Ar 1 , Ar 2 , and Ar 3 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 5 to 50 ring carbon atoms,
Ar 4 is a substituted or unsubstitute aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 5 to 50 ring carbon atoms, or a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, and
L 1 is a single bond, a substituted or unsubstituted arylene group having 6 to 18 ring carbon atoms, or a substituted or unsubstituted heteroarylene group having 5 to 15 ring carbon atoms.
8. The organic EL device as claimed in claim 7 , wherein the emission layer includes an anthracene-containing compound represented by the following Formula 3:
wherein, in Formula 3,
each Ar 9 is independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 50 ring carbon atoms, a substituted or unsubstituted arylthio group having 6 to 50 ring carbon atoms, a substituted or unsubstituted alkoxycarbonyl group having 2 to 50 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 5 to 50ring carbon atoms, a substituted or unsubstituted silyl group, a carboxyl group, a halogen atom, a cyano group, a nitro group, or a hydroxyl group, and
n is an integer of 1 to 10.
9. The organic EL device as claimed in claim 7 , wherein the second layer includes one of the following Compounds 1 to 22:
10. The organic EL device as claimed in claim 9 , wherein the third layer includes one of the following Compounds 23 to 38:
11. The organic EL device as claimed in claim 8 , wherein the anthracene-containing compound includes one of the following Compounds a-1 to a-12: