A novel carbazole compound is provided which can be used as a host material for a light-emitting substance (substance emitting fluorescence or substance emitting phosphorescence). A light-emitting element with high emission efficiency, and a light-emitting device, an electronic device, or a lighting device which has low power consumption are provided. A carbazole compound represented by General Formula (G1) below.
(In the formula, Ar
1
represents any of hydrogen, a substituted or unsubstituted phenyl group, and a carbazolyl group; R
1
to R
3
each independently represent any of hydrogen, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group; α represents any of a substituted or unsubstituted phenylene group and a substituted or unsubstituted biphenylene group; and n is any of 0, 1, and 2.)
提供了一种新型的
咔唑化合物,可用作发光物质(发射荧光或发射
磷光的物质)的宿主材料。提供了一种具有高发射效率的发光元件,以及具有低功耗的发光装置、电子装置或照明装置。
咔唑化合物由下面的通式(G1)表示。(在公式中,Ar1代表氢、取代或未取代的苯基团和
咔唑基团中的任意一种;R1到R3各自独立地代表氢、取代或未取代的苯基团和取代或未取代的
联苯基团中的任意一种;α代表取代或未取代的苯撑基团和取代或未取代的
联苯撑基团中的任意一种;n是0、1和2中的任意一种。)