Triazole derivative, and light-emitting element, light-emitting device, electronic device and lighting device using the triazole derivative
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 formulae 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.
1. A triazole derivative represented by formula (100),
2. A light-emitting element comprising the triazole derivative according to claim 1 between a pair of electrodes.
3. A light-emitting element comprising:
a light-emitting layer between a pair of electrodes,
wherein the light-emitting layer includes the triazole derivative according to claim 1 .
4. A light-emitting element comprising:
a light-emitting layer between a pair of electrodes,
wherein the light-emitting layer includes the triazole derivative according to claim 1 and a substance emitting phosphorescence.
5. The light-emitting element according to claim 4 ,
wherein the substance emitting phosphorescence has an emission peak at a wavelength greater than or equal to 400 nm and less than or equal to 500 nm.
6. A light-emitting device comprising the light-emitting element according to claim 2 .
7. An electronic device comprising the light-emitting device according to claim 6 .
8. A lighting device comprising the light-emitting element according to claim 2 .
9. A triazole derivative represented by General Formula (G1),
wherein a substituent represented by General Formula (G2) is bonded to Ar 3 , and
wherein:
A represents sulfur;
Ar 3 represents an unsubstituted phenylene group;
Ar 1 and Ar 2 separately represent an unsubstituted phenyl group; 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.
10. A light-emitting element comprising the triazole derivative according to claim 9 between a pair of electrodes.
11. A light-emitting element comprising:
a light-emitting layer between a pair of electrodes,
wherein the light-emitting layer includes the triazole derivative according to claim 9 .
12. A light-emitting element comprising:
a light-emitting layer between a pair of electrodes,
wherein the light-emitting layer includes the triazole derivative according to claim 9 and a substance emitting phosphorescence.
13. The light-emitting element according to claim 12 ,
wherein the substance emitting phosphorescence has an emission peak at a wavelength greater than or equal to 400 nm and less than or equal to 500 nm.
14. A light-emitting device comprising the light-emitting element according to claim 11 .
15. An electronic device comprising the light-emitting device according to claim 14 .
16. A lighting device comprising the light-emitting element according to claim 10 .