fig3

Figure 3. Electronic band structures of: (A) GST-I; (B) GST-II; and (C) GST-IV. The orange line is the highest valence band (HVB) and the red line represents the lowest conduction band (LCB). The inset of (B) is the zoomed in picture around the conduction band minimum (CBM) and valence band maximum (VBM). The Fermi level (Ef) is set to 0 eV.