Fig. 4From: Mechanism of Fluorescence Enhancement of Biosynthesized XFe2O4–BiFeO3 (X = Cr, Mn, Co, or Ni) Membranes a Dielectric functions, b PDOSs, and c surface potentials of XFO–BFO membranes by DFT simulation. Therein, the scissors were used to make rigid upward shift of conductive bands by 2.5 eV (BFO) and 2 eV (XFO) [19]Back to article page