Triazole Derivative, and Light-Emitting Element, Light-Emitting Device, Lighting Device, and Electronic Device Using Triazole Derivative

A light-emitting element comprising:

• a pair of electrodes;
• and
• a light-emitting layer including a light-emitting substance and a triazole derivative,
• wherein:
• the triazole derivative is represented by a general formula (G1):
• each of Ar1 to Ar3 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring;
• and
• R1 represents one of an alkyl group having 1 to 4 carbon atoms and a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring.

A lighting device having a light-emitting element, the light-emitting element comprising:

• a pair of electrodes;
• and
• a light-emitting layer including a light-emitting substance and a triazole derivative,
• wherein:
• the triazole derivative is represented by a general formula (G1):
• each of Ar1 to Ar3 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring;
• and
• R1 represents one of an alkyl group having 1 to 4 carbon atoms and a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring.

An electronic device having a display portion comprising a light-emitting element, the light-emitting element comprising:

• a pair of electrodes;
• and
• a light-emitting layer including a light-emitting substance and a triazole derivative,
• wherein:
• the triazole derivative is represented by a general formula (G1):
• each of Ar1 to Ar3 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring;
• and
• R1 represents one of an alkyl group having 1 to 4 carbon atoms and a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring.