公开(公告)号：EP4361158A1

公开(公告)日：2024-05-01

申请号：EP22828032.7

申请日：2022-03-30

申请人： Kyulux, Inc.

发明人： YOSHIZAKI Makoto ,  MORIMOTO Kei ,  HWANG Songhye ,  OZAWA Hiroaki ,  KAKIZOE Hayato ,  KODAMA Yuka

IPC分类号： C07F5/02 ,  C09K11/06 ,  C07D209/86 ,  C07D519/00 ,  H01L51/50

CPC分类号： C07D519/00 ,  C07D209/86 ,  C07F5/02 ,  C09K11/06

摘要： Provided is an organic electroluminescence device in which a high luminous efficiency can be obtained even in a case where the LUMO level of a fluorescence material is lower than the LUMO level of a delayed fluorescence material. In the organic electroluminescence device, a light-emitting layer contains a first organic compound, a second organic compound that is a delayed fluorescence material, and a third organic compound that emits fluorescence, the second organic compound has the LUMO energy higher than that of the third organic compound, the largest component of light emitted from the device is fluorescence from the third organic compound, and an orientation value of the third organic compound in the light-emitting layer is -0.3 or less.

公开(公告)号：EP4102587A1

公开(公告)日：2022-12-14

申请号：EP21750170.9

申请日：2021-02-03

申请人： Kyulux, Inc.

发明人： KAKIZOE Hayato ,  OZAWA Hiroaki ,  ENDO Ayataka ,  YANG YuSeok

IPC分类号： H01L51/50 ,  C07D207/448

摘要： An organic light emitting element produced by using a light emitting composition that contains both a first compound having a PBHT value more than 0.730 and a second compound having Esi lower than that of the first compound and ΔE ST less than 0.20 eV is excellent in durability. Esi is the lowest excited singlet energy level, ΔE ST is the difference between the lowest excited singlet energy level and the lowest excited triplet energy level.