Disclosed is a multilayer electroluminescent device comprising an anode, a hole transport layer (HTL), a light emitting layer (LEL), an electron transport layer (ETL), and a cathode, in that order, wherein there is located between the HTL and the LEL an interlayer (IL) comprising a compound containing a 3-phenylindolyl group.

Se divulga un dispositivo electroluminiscente de múltiples capas que abarca un ánodo, una capa de transporte del agujero (HTL), una capa que emite ligera (LEL), una capa de transporte del electrón (ETL), y un cátodo, en esa orden, en donde se sitúa entre el HTL y el LEL una capa intermediaria (IL) que abarca un compuesto que contiene un grupo 3-phenylindolyl.

 
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