Fig. 2: Twist-angle dependent intralayer excitons.
From: Moiré-engineered light-matter interactions in MoS2/WSe2 heterobilayers at room temperature
a Evolution of RC spectra with twist angles. Intralayer excitons in WSe2 and MoS2 are denoted as \({{{{\rm{X}}}}}_{WS{e}_{2}}^{A}\) (blue-coded) and \({{{{\rm{X}}}}}_{Mo{S}_{2}}^{A}\) (red-coded), respectively. Intralayer excitons of bilayer MoS2 in an uncoupled 2L-MoS2/WSe2 heterostructure (green-coded) are used as a reference to describe the energy shift of the intralayer exciton resonance. The curves are shifted vertically for clarity, and the gray dashed lines are a guide to the eye. Panels (b) and (c) show the fitted exciton energy of WSe2 and MoS2 from (a) as a function of twist angle, respectively. The inset of (c) shows the AFM image of the periodically modulated height profile of a 1.1° MoS2/WSe2 heterobilayer, and the amplitude of the height modulation is about 157 pm.
