Fig. 4: GW band structures for MoSi2N4 from monolayer to bulk.
a–c represent the GW band structure of monolayer, bilayer, and bulk MoSi2N4, respectively. Important electron and hole states involved in the optical transitions that give rise to the A (red), B (green), and C (blue) low energy absorption peaks in monolayer MoSi2N4 are also shown.
