Patent ID: 6632545
Filing Date: 2003-10-14
Classification: H01L,Y10S

Abstract:
An electroluminescent device comprising an anode, a cathode, and at least one electroluminescent organic layer interposed therebetween, wherein a luminescent material in said organic layer emits light upon application of a voltage between the anode and the cathode, and wherein an auxiliary carrier transporting layer which contains an aromatic amine derivative comprising recurring units of the following general formula (1) and having a number average molecular weight of 250 to 100,000 is formed between said anode and said organic layer, wherein R1 to R4 each are independently hydrogen, a hydroxyl group, substituted or unsubstituted monovalent hydrocarbon group, organooxy group, acyl group or sulfonate group, excluding the case where all R1 to R4 are hydrogen atoms at the same time, and n is a positive number of 2 to 3,000.