ELECTROLUMINESCENT ELEMENT

摘要

In an electroluminescent device comprising an anode, a cathode, and an electroluminescent organic layer interposed therebetween, wherein a luminescent material in the organic layer emits light upon application of a voltage between the anode and the cathode, an auxiliary carrier transporting layer which contains an aromatic amine derivative comprising recurring units of formula (1) and having a number average molecular weight of 200-100,000 is formed between the anode and the organic layer. R<1> to R<4> each are hydrogen, hydroxyl, substituted or unsubstituted monovalent hydrocarbon, organooxy, acyl or sulfonate group, excluding the case where all R<1> to R<4> are hydrogen atoms at the same time, and n is a positive number of 2-3,000.