Under the most Li-rich condition (Figure ), E Fermi,eq is at 2.17 eV, which is inside the conduction band (not shown). This indicates that Li 3 N is degenerately n-type under Li-rich conditions. In other words, Li 3 N has a high free electron concentration. The calculated [e net ] is 2.0 ⇥ 10 18 cm 3 . The dominant defects at E Fermi,eq are V +1