Figure 2.

a) Three‐dimensional lattice structure of phosphorene. Reproduced with permission.22 Copyright 2014, American Institute of Physics. b) Lattice structure of BP with atomic vibrational patterns of the phonon modes (A_1g, B_2g and A). Reproduced with permission.148 Copyright 2015, Nature Publishing Group. c) Crystalline orientation of 15L BP flake. Reproduced with permission.63 Copyright 2014, American Chemical Society. d) Calculated electronic band structure of monolayer, bilayer, trilayer and bulk BP in Brillouin zone in which the energy is scaled with respect to Fermi energy E _F. Reproduced with permission.156 Copyright 2014, IOP.