Organic electroluminescent elements, electronic components and electromechanical devices

Abstract

This invention provides an organic EL element with excellent carrier balance, enabling low driving voltage, high efficiency, and long lifetime. According to this invention, an organic EL element is disclosed, which sequentially comprises an anode, a hole transport layer, an electron blocking layer, a light-emitting layer, an electron transport layer, and a cathode. The electron blocking layer contains a specific aryl amine compound having a substituted phenyl group represented by the following general formula (II). The light-emitting layer contains a specific aryl amine compound having condensed polycyclic aromatic groups such as indendrophenanthrene, indendibenzofuran, and indendibenzothiophene: Wherein, Ar4 and Ar5 represent aryl or heteroaryl groups, R1 represents a deuterium atom, alkyl, alkoxy, aryl, heteroaryl, and aryloxy group, n represents an integer from 0 to 3, and * refers to a linking part to the structure in the aryl amine compound.

Images