| 主权项 |
1. An organic electroluminescence (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 that includes a hole transport compound 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 in a compound represented by the following Chemical Formula (1); a second layer disposed closer to the emission layer than the first layer, the second layer including a compound represented by Chemical Formula (1); and a third layer disposed closer to the emission layer than the second layer, the third layer including a compound represented by the following Chemical Formula (2), wherein the emission layer includes a compound represented by the following Chemical Formula (3), wherein, in Chemical Formula (1),
Ar1, Ar2, and Ar3 are each independently a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group,Ar4 is a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, a carbazolyl group, or an alkyl group, andL1 is a single bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted heteroarylene group, wherein, in Chemical Formula (2),
R1, R2, and R3 are each independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 15 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 30 ring carbon atoms,l, m, and n are each independently an integer and satisfy the following relations 0≦1≦4, 0≦m≦4, and 0≦n≦5,R4 is a hydrogen atom or a fluorine atom,o is an integer that satisfies the following relation 0≦o≦3, andAr5 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, wherein, in Chemical Formula (3),
each Ar6 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, andp is an integer of 1 to 10. |
