for establishing new electronic equilibrium. Further, we found the low energy of the HOMO level of fullerenes avoids the electrons to flow from the HOMO of fullerenes to the phosphorene conduction band. In the same fashion, Wang and co-workers found via photoelectron spectra measurements that electrons are transferred from phosphorene to C60, where it is experimentally noted that work function of C60 (WF5.7 eV) is considerably higher than the ionization potential of phosphorene (IP4.2 eV). Note that in the Koopmans' Theorem scheme, WFIP-HOMO; thus, the HOMO level of C60 must be lower in energy concerning the Fermi level of phosphorene , in agreement with our results.