公开(公告)号：EP2736089A1

公开(公告)日：2014-05-28

申请号：EP12814721.2

申请日：2012-07-03

申请人： Hitachi, Ltd.

发明人： SAKUMA Hirotaka ,  ARATANI Sukekazu ,  NOBUKI Shunichiro ,  ISHIHARA Shingo

IPC分类号： H01L51/50 ,  H05B33/10 ,  H05B33/26

CPC分类号： H01L51/5203 ,  H01L51/0012 ,  H01L51/0087 ,  H01L51/5271 ,  H01L51/5275 ,  H01L51/56

摘要： In order to achieve the increased efficiency of an organic light-emitting element, there is a need to reduce the influence of non-radiative recombination of electronhole pairs except for surface plasmon polariton excitation, to convert most of exciton energy into visible light, and to tremendously improve the luminous efficiency of the organic light-emitting element. An organic light-emitting element according to the present invention includes a reflective electrode, a transparent electrode, and a light-emitting layer placed between the reflective electrode and the transparent electrode, and the organic light-emitting element is configured so that the light-emitting layer contains a host and a first dopant, and for the first dopant, one of the vertical component and horizontal component of the average value for transition dipole moments with respect to a substrate surface is larger than the other of the components.

摘要翻译： 为了实现有机发光元件的提高效率，需要减少除了表面等离子体激元激发之外的电子空穴对的非辐射复合的影响，以将大部分激子能转化为可见光，并且 极大地提高了有机发光元件的发光效率。 根据本发明的有机发光元件包括反射电极，透明电极和放置在反射电极和透明电极之间的发光层，并且有机发光元件被配置为使得发光元件 发光层包含主体和第一掺杂剂，并且对于第一掺杂剂，相对于衬底表面的跃迁偶极矩的平均值的垂直分量和水平分量中的一个大于其他分量。

公开(公告)号：EP2736089B1

公开(公告)日：2018-09-12

申请号：EP12814721.2

申请日：2012-07-03

申请人： Hitachi, Ltd.

发明人： SAKUMA Hirotaka ,  ARATANI Sukekazu ,  NOBUKI Shunichiro ,  ISHIHARA Shingo

IPC分类号： H01L51/50 ,  H05B33/10 ,  H05B33/26 ,  H01L51/00 ,  H01L51/52

CPC分类号： H01L51/5203 ,  H01L51/0012 ,  H01L51/0087 ,  H01L51/5271 ,  H01L51/5275 ,  H01L51/56

摘要： In order to achieve the increased efficiency of an organic light-emitting element, there is a need to reduce the influence of non-radiative recombination of electronhole pairs except for surface plasmon polariton excitation, to convert most of exciton energy into visible light, and to tremendously improve the luminous efficiency of the organic light-emitting element. An organic light-emitting element according to the present invention includes a reflective electrode, a transparent electrode, and a light-emitting layer placed between the reflective electrode and the transparent electrode, and the organic light-emitting element is configured so that the light-emitting layer contains a host and a first dopant, and for the first dopant, one of the vertical component and horizontal component of the average value for transition dipole moments with respect to a substrate surface is larger than the other of the components.