Light-Emitting Device, Light-Emitting Apparatus, Electronic Device, and Lighting Device
申请人:Semiconductor Energy Laboratory Co., Ltd.
公开号:US20200388779A1
公开(公告)日:2020-12-10
A light-emitting device with low driving voltage and favorable reliability is provided. The light-emitting device includes an electron-injection layer between a cathode and a light-emitting layer. The electron-injection layer is a mixed film of a metal and an organic compound having a function of interacting with the metal as a tridentate or tetradentate ligand, and the metal atom and the organic compound form SOMO.