公开(公告)号：US20230165136A1

公开(公告)日：2023-05-25

申请号：US18048113

申请日：2022-10-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jong Soo KIM ,  Sooghang IHN ,  Sungho NAM ,  Eunsuk KWON ,  Hwangsuk KIM ,  Yeonsook CHUNG ,  Yongsik JUNG ,  Hyeonho CHOI ,  Minsik MIN ,  Hyejin BAE

IPC: H01L51/00 ,  C09K11/06

CPC classification number: H01L51/0094 ,  H01L51/0087 ,  C09K11/06 ,  H01L51/008 ,  H01L51/5012

Abstract: Provided is an organic light-emitting device including: a first electrode; a second electrode facing the first electrode; and an emission layer between the first electrode and the second electrode and including a host and a phosphorescent dopant, wherein a photoluminescence (PL) spectrum of the emission layer may include a first peak (Imax) having a maximum intensity and a second peak (I2nd) having a second highest intensity, and a rate of change of an intensity of the second peak of the emission layer may be greater than 0 percent (%) of an intensity of a second peak of a PL spectrum of the phosphorescent dopant.