Hexagonal borophene stabilized by mixed doping: structure, stability, electronic and mechanical properties

Using DFT calculations, the possibility of stabilizing the hexagonal honeycomb shape of borophene by mixed doping in the B6Ga2Mg4 system was showed, where a flat sheet of borophene is placed between two layers formed by magnesium and gallium atoms. B6Ga2Mg4 is a relatively soft material with metallic conductivity. Evaluation of the thermodynamic stability of this compound shows that melting will occur at temperatures above 1200 K.