Extended Data Fig. 2: Simulation of absorption spectra of intralayer moiré exciton and trion in the WSe₂/MoSe₂ heterobilayer.

a, b, The experimental absorption spectra of the WSe₂ intralayer exciton (a) and positive trion (b) in the WSe₂/MoSe₂ heterobilayer. c, d, Calculated absorption spectra of intralayer moiré exciton (c) and trion (d), broadened by a Lorentzian function with half-width of 0.5 meV and 1 meV, respectively. e, f, The calculated moiré exciton (e) and trion (f) miniband structures. The corresponding states for the absorption peaks are denoted. The calculations in c–f use a 2D sinusoidal superlattice potential with period L = 20 nm and carrier well depth V = 8 meV (inset of c).