申请人:Idemitsu Kosan Co., Ltd.
公开号:US10297761B2
公开(公告)日:2019-05-21
An organic electroluminescence device includes: an anode; a cathode; and a single- or multi-layer organic layer interposed between the anode and the cathode. The organic layer includes at least one emitting layer containing a dopant material represented by a formula below. In the formula, X1 to X5 each independently represent CR1 or a nitrogen atom, at least one of X1 to X5 is a nitrogen atom, L1 represents a divalent aromatic hydrocarbon group or a divalent heterocyclic group, A and B each independently represents a cyclic structure, at least one of the cyclic structure A and the cyclic structure B has a substituent, and R1 represents an aryl group, alkyl group or the like.
一种有机电致发光器件包括:阳极;阴极;以及置于阳极和阴极之间的单层或多层有机层。有机层包括至少一个发射层,其中含有下式表示的掺杂材料。式中,X1 至 X5 各自独立地代表 CR1 或氮原子,X1 至 X5 中至少有一个是氮原子,L1 代表二价芳烃基团或二价杂环基团,A 和 B 各自独立地代表环状结构,环状结构 A 和环状结构 B 中至少有一个具有取代基,R1 代表芳基、烷基或类似基团。