fig8
Figure 8. (A-E) SEM images of Bi2Se(3-x)Sx grown on different substrates. (A) Si/SiO2. (B) Sapphire. (C-E) Si/SiO2 covered with single-layer graphene after growth for (C) 60 min, (D) 120 min, and (E) 180 min, This figure is adapted with permission[68], Copyright © 2024 Royal Society of Chemistry.
