The Electronic and Optical Properties of 2D Boron Sheet with cmmm Space Group

Recently a new type of two-dimensional material called borophene (boron Sheet) has been successfully synthesized on substrates under very high vacuum conditions and has received much attention. In this paper, using the density functional theory and FP-LAPW + lo method using the GGA approximation, we investigated the electronic and optical properties of borophene with the cmmm space group. The study shows the electronic properties of metallic behavior for this two-dimensional structure. The optical properties also indicate the optical anisotropy of this compound for both x and z directions. Borophene also has a good absorption coefficient in the visible region along the x-ray axis and that the refractive index in this region is less than one.