Electronic Structural and Optical Properties of Multilayer Blue Phosphorus: A First-Principle Study

Figure 7

The optical absorption spectrum of blue phosphorus (a) monolayer, (b) bilayer, (c) trilaminar, and (d) quadruple. The red curve shows the optical properties of materials along the -direction, the green curve shows those along the -direction, and the blue curve shows those along the -direction (along vacuum layer direction).

(a)

(b)

(c)

(d)