| 主权项 |
1. An organic light-emitting device, comprising:
a first electrode; a second electrode disposed opposite to the first electrode; an emission layer disposed between the first electrode and the second electrode; and an electron-transporting layer disposed between the emission layer and the second electrode; wherein the electron-transporting layer includes a first electron-transporting material and a second electron-transporting material; and a lowest unoccupied molecular orbital (LUMO) energy level of the first electron-transporting material (EL1) and a lowest unoccupied molecular orbital (LUMO) energy level of the second electron-transporting material (EL2) satisfy the equation 0.1 eV≦|EL1−EL2|≦0.3 eV, wherein the first electron-transporting material and the second electron-transporting material are each independently selected from an amine-based compound represented by Formula 1 and an anthracene-based compound represented by Formula 2: wherein in Formulae 1 and 2, groups represented by X1 and X2 are each independently selected from a substituted or unsubstituted C6-C60 arylene group and a substituted or unsubstituted C2-C60 heteroarylene group; m1 and m2 are each independently an integer of 0 to 5; groups represented by Ar1 and Ar2 are each independently selected from a substituted or unsubstituted C6-C60 aryl group and a substituted or unsubstituted C2-C60 heteroaryl group; wherein at least one of the groups represented by Ar1 and Ar2 is selected from i) a pyridyl group, a pyrimidyl group, and a triazinyl group, ii) a pyridyl group, a pyrimidyl group, and a triazinyl group each substituted with at least one of a C6-C60 aryl group and a C2-C60 heteroaryl group; iii) a C6-C60 aryl group and a C2-C60 heteroaryl group each substituted with at least one of a pyridyl group, a pyrimidyl group, and a triazinyl group; and iv) a pyridyl group, a pyrimidyl group, and a triazinyl group each substituted with at least one of a C6-C60 aryl group and a C2-C60 heteroaryl group, which are each substituted with at least one of a C6-C60 aryl group and a C2-C60 heteroaryl group; and a group represented by Ar3 is selected from i) a pyridyl group, a pyrimidyl group, and a triazinyl group, ii) a pyridyl group, a pyrimidyl group, and a triazinyl group each substituted with at least one of a C6-C60 aryl group and a C2-C60 heteroaryl group; iii) a C6-C60 aryl group and a C2-C60 heteroaryl group each substituted with at least one of a pyridyl group, a pyrimidyl group, and a triazinyl group; and iv) a pyridyl group, a pyrimidyl group, and a triazinyl group each substituted with at least one of a C6-C60 aryl group and a C2-C60 heteroaryl group, which are each substituted with at least one of a C6-C60 aryl group and a C2-C60 heteroaryl group. |
