Carbazole Derivative with Heteroaromatic Ring, and Light-Emitting Element, Light-Emitting Device, and Electronic Device Using Carbazole Derivative with Heteroaromatic Ring
申请人:Nomura Hiroko
公开号:US20100237773A1
公开(公告)日:2010-09-23
Disclosed is a carbazole derivative and a light-emitting element, a light-emitting device, and an electronic device using thereof. The carbazole derivative possesses an oxadiazole moiety or a quinoxaline moiety as a heteroaromatic ring having an electron-transporting property and a carbazole moiety having a hole-transporting property. The ability of the carbazole derivative to transport both electrons and holes and its large excitation energy larger than a triplet excitation energy of a phosphorescent compound allow the formation of a phosphorescent light-emitting element having well-controlled carrier balance, which contributes to the formation of light-emitting devices and electronic devices that are capable of being driven at a low voltage, have a long lifetime, and consume low power. The detailed structure of the carbazole derivative is defined in the specification.
本公开揭示了一种咔唑衍生物以及使用该衍生物的发光元件、发光装置和电子设备。该咔唑衍生物具有氧代二唑基团或喹啉基团作为具有电子传输性质的杂芳环,以及具有孔传输性质的咔唑基团。该咔唑衍生物传输电子和空穴的能力,以及其较磷光化合物的三重激发能量更大的激发能量,使得形成了一个具有良好控制载流子平衡的磷光发光元件,有助于形成能够在低电压下驱动、具有长寿命并且耗电低的发光装置和电子设备。该咔唑衍生物的详细结构在说明书中定义。