Abstract A bipolar host designed using indolocarbazole as a bipolar moiety was developed by coupling two indolocarbazole moieties via a phenyl linker. The indolocarbazole derived hosts could carry holes and electrons in the emitting layer, functioning as bipolar hosts in the green phosphorescent organic light-emitting diodes. The linker based molecular design was superior to the directly coupled molecular design to match carrier balance for high quantum efficiency in the green phosphorescent devices.

中文翻译：

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用于绿色磷光有机发光二极管的双极型吲哚并咔唑主体

摘要 通过苯基连接体偶联两个吲哚并咔唑部分，开发了使用吲哚并咔唑作为双极性部分设计的双极性主体。吲哚并咔唑衍生的主体可以在发光层中携带空穴和电子，在绿色磷光有机发光二极管中充当双极主体。基于接头的分子设计优于直接偶联的分子设计，以匹配载流子平衡以实现绿色磷光器件中的高量子效率。