Tribenzazole amine derivative and organic electroluminescent device comprising same
Provided is a tribenzazole amine derivative represented by Formula 1 that effectively absorbs high energy UV light from an external light source to minimize damage to organic materials present in an organic electroluminescent device, contributing to a substantial improvement in the lifetime of the organic electroluminescent device. Also provided is an organic electroluminescent device using the tribenzazole amine derivative. The organic electroluminescent device includes a first electrode, a second electrode, and an organic layer arranged between the first and second electrodes. The organic layer includes the tribenzazole amine derivative.
1. A tribenzazole amine compound represented by Formula 1:
wherein Z 1 and Z 2 are each independently O or S, R 1 , R 2 , and R 3 are identical to or different from each other and are each independently hydrogen or unsubstituted alkyl, and l, n, and m are independently an integer from 0 to 4.
2. The tribenzazole amine compound according to claim 1 , wherein the tribenzazole amine compound is selected from compounds represented by the following Formula 2-1 to Formula 2-18:
3. An organic electroluminescent device comprising a first electrode, an organic layer consisting of a plurality of layers arranged on the first electrode, a second electrode arranged on the organic layer, and a capping layer arranged on the second electrode, wherein the capping layer comprises the tribenzazole amine compound according to claim 1 .
4. The organic electroluminescent device according to claim 3 , wherein the organic layer comprises a hole injection layer, a hole transporting layer, an emission layer, an electron transporting layer, and an electron injection layer.
5. An organic electroluminescent device comprising a first electrode, an organic layer consisting of a plurality of layers arranged on the first electrode, a second electrode arranged on the organic layer, and a capping layer arranged on the second electrode, wherein the capping layer comprises the tribenzazole amine compound according to claim 2 .
6. The organic electroluminescent device according to claim 5 , wherein the organic layer comprises a hole injection layer, a hole transporting layer, an emission layer, an electron transporting layer, and an electron injection layer.