organic light-emitting diode with low operating voltage and High efficiency

摘要

The present invention is characterized in that a multi-functional HTL (Multi-functional HTL) compound having a fused structure capable of both p-doping and hole-transporting functions is composed of a single hole layer of a multi-functional HTL (Multi-functional Hole Transportation Layer), and light-emitting. The present invention relates to a novel organic light-emitting device with high efficiency capable of realizing low voltage driving at a level equal to or higher than a conventional device while stably realizing characteristics such as efficiency and long life.