Fig. 5: Layer-dependent optical properties of MoSi2N4.

a–c show the absorption spectra of MoSi2N4 from monolayer to bulk, and (d–f) e-h pair amplitudes of the first three absorption peaks of monolayer MoSi2N4.
a–c show the absorption spectra of MoSi2N4 from monolayer to bulk, and (d–f) e-h pair amplitudes of the first three absorption peaks of monolayer MoSi2N4.