  The tuning black phosphorene properties such as structural, electronic,
transport are explored via substitutional C-doped. We employed density
functional theory (DFT) calculations in combination with non-equilibrium
Green's function (NEGF) for modeling the systems. Our results revealed that
substitutional C-doped phosphorene are energetically favorable, and ruled by
exothermic process. We also found that C-doping induces a change of the
electric properties, such as a semiconductor-to-metal transition for the most
lower concentration and zig-zag C-wire. Moreover, for an armchair C-wire and
the most higher concentration the semiconductor character is kept, meanwhile
the direct-to-indirect transition is observed to band gap nature. Finally, we
show that there exist a dependence of the electronic transport with directional
character of the C-doped configuration, and the possibility to control the
local electric current probability through the applied gate voltage. The
C-doped phosphorene findings demonstrated that, the direction play the role for
conductance on 2D platform.
