h BN is an insulator with a direct band gap of 5.97 eV. Due to its strong covalent sp2 bonds in the plane, the in-plane mechanical strength and thermal conductivity of h-BN has been reported to be close to that of graphene. h BN has an even higher chemical stability than graphene; it can be stable in air up to 1000 °C. In contrast, for graphene the corresponding temperature is 600 °C.
- Close to complete coverage (90-95%), with some minor holes
- Average Thickness of BN film is 13 nm
- Thickness of the copper foil is 20 microns
- Quality is confirmed by TEM. TEM shows perfect hexagonal structure