Organic electroluminescent device using aryl amine derivative containing heterocycle
View Patent ↗An organic electroluminescent device including: an anode, a cathode, an emitting layer formed of an organic compound and interposed between the cathode and the anode, and two or more layers provided in a hole-injecting/hole-transporting region between the anode and the emitting layer; of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is in contact with the emitting layer containing a compound represented by the formula (1); and of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is interposed between the anode and the layer which is in contact with the emitting layer containing an amine derivative represented by the formula (2).
1. A compound selected from compounds of the following formulas:
2. An organic electroluminescent device comprising:
an anode, a cathode, at least an emitting layer formed of an organic compound which is interposed between the cathode and the anode, and a hole-injecting/hole-transporting region between the anode and the emitting layer;
wherein
a layer in the hole-injecting/hole-transporting region contains a compound of a formula selected from the group consisting of the following formulas:
3. The organic electroluminescent device of claim 2 , wherein the compound contained in the hole-injecting/hole-transporting region is selected from the following formulas:
4. The organic electroluminescent device of claim 3 , wherein the compound contained in the hole-injecting/hole-transporting region is the compound of formula A-17:
5. The organic electroluminescent device of claim 3 , wherein the compound contained in the hole-injecting/hole-transporting region is the compound of formula A-20: