Material for organic electroluminescent element and organic electroluminescent element using the same
申请人:NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD.
公开号:US10636981B2
公开(公告)日:2020-04-28
Provided are a material for an organic EL device that improves the luminous efficacy of a device, sufficiently secures its driving stability, and has a simple construction, and an organic EL device using the material. The material for an organic EL device is formed of a carborane compound having a structure in which a dibenzofuranyl group is bonded to a carborane ring. In addition, the material for an organic EL device is preferably used in a light-emitting layer, an electron-transporting layer, or a hole-blocking layer of an organic electroluminescent device having the light-emitting layer between an anode and a cathode laminated on a substrate. Also disclosed is an organic electroluminescent device using the material for an organic EL device as a host material for a light-emitting layer containing a phosphorescent light-emitting dopant and the host material.
本文提供了一种用于有机电致发光器件的材料,该材料可提高器件的发光效率,充分保证其驱动稳定性,并且结构简单,还提供了一种使用该材料的有机电致发光器件。有机电致发光器件材料由碳硼烷化合物构成,该化合物具有二苯并呋喃基与碳硼烷环键合的结构。此外,该有机电致发光器件材料最好用于有机电致发光器件的发光层、电子传输层或空穴阻挡层,该有机电致发光器件的发光层位于层叠在基板上的阳极和阴极之间。此外,还公开了一种有机电致发光器件,该器件使用用于有机电致发光器件的材料作为发光层的宿主材料,该发光层包含磷光发光掺杂剂和宿主材料。