Triazole Derivative, and Light-Emitting Element, Light-Emitting Device, Electronic Device and Lighting Device Using the Triazole Derivative
申请人:Semiconductor Energy Laboratory Co., Ltd.
公开号:US20150197508A1
公开(公告)日:2015-07-16
Objects are to provide the following: a substance that facilitates hole injection and has high triplet excitation energy; a light-emitting element having high emission efficiency using the substance that facilitates hole injection and has high triplet excitation energy; a light-emitting element having low driving voltage; and a light-emitting device, an electronic device, and a lighting device having low power consumption. Provided is a triazole derivative in which a dibenzothiophen-4-yl or dibenzofuran-4-yl group represented by General Formula (G2) is bonded to any one of Ar
1
to Ar
3
of a triazole derivative represented by General Formula (G1). In the formulas, A represents oxygen or sulfur, Ar
1
to Ar
3
separately represent a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and R
1
to R
7
separately represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms.
目的是提供以下内容:一种促进空穴注入并具有高三重态激发能量的物质;使用促进空穴注入并具有高三重态激发能量的物质具有高发射效率的发光元件;具有低驱动电压的发光元件;以及具有低功耗的发光装置、电子设备和照明装置。提供了一种三唑衍生物,其中由一般式(G1)表示的三唑衍生物的Ar1至Ar3中的任何一个与一般式(G2)表示的二苯并噻吩-4-基或二苯并呋喃-4-基键合。在这些公式中,A表示氧或硫,Ar1至Ar3分别表示具有6到13个碳原子的取代或未取代芳基,R1至R7分别表示氢、具有1到4个碳原子的烷基或具有6到13个碳原子的取代或未取代芳基。