Extended Data Fig. 3: Exciton-density-dependent PL spectra at 78 K. | Nature Materials

Extended Data Fig. 3: Exciton-density-dependent PL spectra at 78 K.

From: Twist-angle-dependent interlayer exciton diffusion in WS2–WSe2 heterobilayers

Extended Data Fig. 3

a, Intralayer A exciton emission of 1L-WS2. b, Interlayer exciton emission of WS2-WSe2 (60°). Blue shifting of emission energy is observed for the interlayer excitons with increased exciton density in the WS2-WSe2 (60°) due to the net repulsive exciton-exciton interaction. In contrast, such blueshift is not observed in the 1L-WS2.

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