HfSe2 is a semiconductor with an indirect bandgap of ~1.1 eV. The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. Hafnium Diselenide belongs to the group-IV transition metal dichalcogenides (TMDC).
The HfSe2 crystals produced at HQ Graphene have a lateral size of ~0.6-0.8 cm, are hexagonal shaped, and have a metallic appearance.