Figure 6
From: Cadmium and lithium doping in silver orthophosphate: An ab initio study

The formation energies of possible Li monodoped defects, LiP, LiO, Lii and Lii(s), together with (LiAg-NO) complex and (LiAg-VAg) complex as a function of the Fermi energy under O-rich (a) and O-poor (b) conditions. Only the lowest formation energy states are shown.