申请人:Idemitsu Kosan Co., Ltd.
公开号:EP1923929A1
公开(公告)日:2008-05-21
An organic electroluminescent device (1) including an anode (2), a cathode (6), and at least a first layer (3), a second layer (4), and a third layer (5) provided between the anode (2) and the cathode (6) in that order from the anode side. At least one of the first to third layers (3), (4), and (5) includes a phosphorescent compound. At least one of the first to third layers (3), (4), and (5) is an emitting layer. At least three compounds respectively forming the first layer (3), the second layer (4), and the third layer (5) other than the phosphorescent compound are compounds of the following formula (1).
wherein R1 to R7 each represent a hydrogen atom or a substituent, provided that adjacent substituents may form a ring.
一种有机电致发光器件 (1),包括阳极 (2)、阴极 (6),以及至少一个第一层 (3)、一个第二层 (4) 和一个第三层 (5),从阳极侧依次设置在阳极 (2) 和阴极 (6) 之间。第一至第三层(3)、(4)和(5)中至少有一层包括磷光化合物。第一至第三层(3)、(4)和(5)中至少有一层是发光层。除磷光化合物外,分别形成第一层(3)、第二层(4)和第三层(5)的至少三种化合物是下式(1)的化合物。
其中 R1 至 R7 各代表一个氢原子或一个取代基,但相邻取代基可形成一个环。