“…Recently, the optical properties of borophene have been studied by some researchers: such as the valley-dependent magneto-optical absorption in monolayer 8-Pmmn borophene, 21 the optical conductivity of monolayer b 12 borophene in the presence of an inversion symmetry breaking field, 22 and the optoelectronic properties of buckled borophene by strain and surface functionalization. 23 Furthermore, the far-field radiation properties can be studied based on the optical conductivity of 2D materials, such as the far-field radiation of monolayer PbBiI, 24 graphene, 25,26 and silicene.…”