Figure 6.

The partial density states (PDOS, marked by the line of brown for In, green for Sb, orange for S, red for Na) and total density of states (TDOS, marked by the line of blue) of a) In₂S₃, b) Sb₂S₃, c) heterostructure of I–S and d) Na‐inserted In₂S₃, e) Na‐inserted Sb₂S₃, f) Na‐inserted I–S. Insets are corresponding crystal structures of these compounds. g) Schematic illustration of the buffer action and conductive function of In‐containing layer.