Effect of Fe Concentration on Fe-Doped Anatase TiO₂ from GGA + U Calculations

Figure 3

Density of states (DOS) of TiO₂ doped with Fe (a) 0 at.%, (b) 2.08 at.%, (c) 4.17 at.%, (d) 6.25 at.%. The vertical dotted line is the Fermi energy level.

(a)

(b)

(c)

(d)