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 ÃâÂ°C (in contrast, for graphene the corresponding temperature is 600 ÃâÂ°C).
During Chemical Vapor Deposition, BN is grown on both sides of the copper foil
AFM image of multilayer BN on Cu
AFM scan of multilayer BN on Cu
If transferred onto an SiO2 substrate, the BN film may be seen as a white film. However, it is difficult to recognize the BN film on copper using a microscope.