公开(公告)号：US20230329023A1

公开(公告)日：2023-10-12

申请号：US18026806

申请日：2021-09-17

Applicant: Samsung Display Co., Ltd.

Inventor： Hamed SHARIFIDEHSARI ,  Georgios LIAPTSIS ,  Jaime Leganés CARBALLO ,  Damien JOLY

IPC: H10K50/11

CPC classification number: H10K50/11 ,  H10K2101/25

Abstract: The invention relates to a an organic electroluminescent device including at least one light-emitting layer B composed of one or more sublayers, wherein the one or more sublayers of the light-emitting layer B as a whole include at least one host material HB, at least one phosphorescence material PB, at least one small FWHM emitter SB, and optionally at least one TADF material EB, wherein SB emits light with a full width at half maximum (FWHM) of less than or equal to 0.25 eV.