COMPOUND FOR ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
申请人:Nippon Steel Chemical Co., Ltd.
公开号:EP2272828A1
公开(公告)日:2011-01-12
Disclosed is an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, fully secured of driving stability, and of simple structure. The organic EL device comprises a light-emitting layer between an anode and a cathode piled one upon another on a substrate and the light-emitting layer comprises a phosphorescent dopant and a compound containing carbazolyl groups at both ends represented by the following formula (1) as a host material. In formula (1), X is independently CH optionally containing a substituent or N and L is a direct bond, an ethylene group, or an acetylene group.
本发明公开了一种有机电致发光器件(有机 EL 器件),它的发光效率更高,完全确保了驱动稳定性,而且结构简单。该有机电致发光器件包括一个发光层,发光层位于基底上一个叠着一个的阳极和阴极之间,发光层包括磷光掺杂剂和一种两端含有咔唑基团的化合物,如下式(1)所示作为主材料。在式(1)中,X独立地是CH,可选地含有取代基或N,L是直接键、乙烯基或乙炔基。