申请人:Samsung Display Co., Ltd.
公开号:EP2554545A1
公开(公告)日:2013-02-06
A carbazole-based compound of Formula 1 and an organic light-emitting diode including the same. The carbazole-based compound represented by Formula 1 has a triarylamine structure, wherein at least one of R1 to R5 is essentially a nitrogen-containing group. Thus, the carbazole-based compound has high glass transition temperature and/or high melting point, and is stable during electron injection, and when interposed between a pair of electrodes (anode and cathode) of an organic light-emitting diode, the carbazole-based compound may have excellent thermal resistance against Joule's heat generated in organic layers between the pair of electrodes, between the organic layers, or between the organic layer and the electrode during an operation of the organic light-emitting diode.
一种式 1 的咔唑基化合物和包括该化合物的有机发光二极管。式 1 所代表的咔唑基化合物具有三芳基胺结构,其中 R1 至 R5 中至少有一个基本上是含氮基团。因此,咔唑基化合物具有较高的玻璃化温度和/或较高的熔点,在电子注入过程中稳定,而且当置于有机发光二极管的一对电极(阳极和阴极)之间时,咔唑基化合物对有机发光二极管工作期间在一对电极之间、有机层之间或有机层与电极之间的有机层中产生的焦耳热具有优异的耐热性。