Figure 2
From: Two-dimensional CsPbI3/CsPbBr3 vertical heterostructure: a potential photovoltaic absorber
Illustration of top view and side view of crystal structure of (a) HS1, (b) HS2, (c) HS3 and (d) HS4. Here pink, blue, purple and brown spheres represent Cs, Pb, I and Br atoms, respectively.
