MATERIAL FOR USE IN PHOSPHORESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE USING SAME
申请人:Kai Takahiro
公开号:US20110315975A1
公开(公告)日:2011-12-29
Provided is an organic electroluminescent device (organic EL device), in which the luminous efficiency of the device is improved, driving stability is sufficiently ensured, and the construction of the device is simple. This organic EL device is an organic electroluminescent device, including a light-emitting layer between an anode and a cathode laminated on a substrate, in which the light-emitting layer contains a phosphorescent light-emitting dopant and an indolocarbazole compound as a host material. Examples of the indolocarbazole compound include a compound represented by the following formula (1). It should be noted that in the formulae: a ring A and a ring B are represented by the formulae (1a) and (1b), respectively; Ar's each represent an aromatic hydrocarbon group or an aromatic heterocyclic group; R's each represent a hydrogen atom, an alkyl group, or a cycloalkyl group; X represents a methine group or a nitrogen atom; A represents an aromatic hydrocarbon group, an alkyl group, a cycloalkyl group, or a group represented by the formula (1c); and n represents 0 or 1.
提供的是一种有机电致发光器件(有机EL器件),其中改善了器件的发光效率,充分确保了驱动稳定性,并且器件的构造简单。这种有机EL器件是一种有机电致发光器件,包括位于基板上的阳极和阴极之间的发光层,其中发光层包含一种磷光发光掺杂剂和一种吲哚并咔唑化合物作为主体材料。吲哚并咔唑化合物的例子包括以下式子(1)表示的化合物。应注意,在式子中:环A和环B分别由式子(1a)和(1b)表示;Ar分别表示芳香族碳氢基团或芳香族杂环基团;R分别表示氢原子、烷基或环烷基;X表示亚甲基或氮原子;A表示芳香族碳氢基团、烷基、环烷基或由式子(1c)表示的基团;n表示0或1。