Carbazole derivative, and light-emitting element, light-emitting device, and electronic device using the carbazole derivative
申请人:Semiconductor Energy Laboratory Co., Ltd.
公开号:US10556864B2
公开(公告)日:2020-02-11
To provide a light-emitting element having high luminous efficiency and to provide a light-emitting device and an electronic device which consumes low power and is driven at low voltage, a carbazole derivative represented by the general formula (1) is provided. In the formula, α1, α2, α3, and α4 each represent an arylene group having less than or equal to 13 carbon atoms; Ar1 and Ar2 each represent an aryl group having less than or equal to 13 carbon atoms; R1 represents any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group; and R2 represents any of an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group. In addition, l, m, and n are each independently 0 or 1.
为了提供一种具有高发光效率的发光元件,并提供一种低功耗和低电压驱动的发光器件和电子器件,提供了一种由通式(1)表示的咔唑衍生物。式中,α1、α2、α3 和 α4 分别代表具有小于或等于 13 个碳原子的芳基;Ar1 和 Ar2 分别代表具有小于或等于 13 个碳原子的芳基;R1 代表氢原子、具有 1 至 6 个碳原子的烷基、取代或未取代的苯基和取代或未取代的联苯基中的任一种;以及 R2 代表具有 1 至 6 个碳原子的烷基、取代或未取代的苯基和取代或未取代的联苯基中的任一种。此外,l、m 和 n 各自独立地为 0 或 1。