公开(公告)号：US20230165022A1

公开(公告)日：2023-05-25

申请号：US18058397

申请日：2022-11-23

Applicant: Samsung Display Co., Ltd.

Inventor： Seulong Kim ,  Hajin Song ,  Hyoungcheol Lim ,  Yangjin Cho ,  Jaehoon Hwang

IPC: H01L51/50 ,  H01L51/00

CPC classification number: H01L51/5004 ,  H01L51/0094 ,  H01L51/0073 ,  H01L51/0058 ,  H01L51/504 ,  H01L2251/5384

Abstract: In a light-emitting device, an emission layer includes a first emission layer and a second emission layer, the first emission layer includes a first host, the second emission layer includes a second host and a third host, and a hole mobility of the first host (μH1), a hole mobility of the second host (μH2), and a hole mobility of the third host (μH3) satisfy Expressions (1) and (2) below:


μH1>μH2  (1)



μH1>μH3  (2).