ORGANIC ELECTROLUMINESCENT DEVICE

摘要

An organic electroluminescent device includes an anode, an emission layer, a first hole transport layer positioned between the anode and the emission layer, and a second hole transport layer positioned between the first hole transport layer and the emission layer, wherein the first hole transport layer includes an electron accepting material, and the second hole transport layer includes a hole transport material represented by the following Formula 1:;

主权项

1. An organic electroluminescent (EL) device comprising:
an anode; an emission layer; a first hole transport layer between the anode and the emission layer, the first hole transport layer comprising an electron accepting material; and a second hole transport layer between the first hole transport layer and the emission layer, the second hole transport layer comprising a first hole transport material represented by Formula 1) wherein Ar1 and Ar2 are each independently selected from a substituted or unsubstituted aryl group having 6 to 12 carbon atoms for forming a ring, and a substituted or unsubstituted heteroaryl group having 5 to 13 carbon atoms for forming a ring, X1 to X7 are each independently selected from hydrogen, deuterium, a halogen atom, an alkyl group having 1 to 15 carbon atoms, a substituted or unsubstituted aryl group having 6 to 18 carbon atoms for forming a ring, and a substituted or unsubstituted heteroaryl group having 5 to 18 carbon atoms for forming a ring, and a is 1 or 2.