Optical, photonic and optoelectronic properties of graphene, h‐BN and their hybrid materials

Because of the linear dispersion relation and the unique structure of graphene’s Dirac electrons, which can be tuned the ultra‐wide band, this enables more applications in photonics, electronics and plasma optics. As a substrate, hexagonal boron nitride (h‐BN) has an atomic level flat surface without dangling bonds, a weak doping effect and a response in the far ultraviolet area. So the graphene/h‐BN heterostructure is very attractive due to its unique optical electronics characteristics. Graphene and h‐BN which are stacked in different ways could open the band gap of graphene, and form a moiré pattern for graphene on h‐BN and the superlattice in the Brillouin zone, which makes it possible to build photoelectric devices.