Figure 6

The band structures of the (a) BiOCl/BiOBr, (b) BiOCl/BiOI, and (c) BiOBr/BiOI heterostructures. The corresponding partial density of states (DOS) of the (d) BiOCl/BiOBr, (e) BiOCl/BiOI, and (f) BiOBr/BiOI structures. The violet, red, green, brown, and blue lines represent the partial DOS of Bi, O, Cl, Br, and I atoms, respectively.