Extended Data Fig. 6: Power-dependent PL spectra from the free-standing WS2/WSe2 heterobilayer (sample 2) at 83 K.
From: Enhanced interactions of interlayer excitons in free-standing heterobilayers
a, Zoomed in PL spectra with fitting curves for two interlayer peaks: IX1 (blue) and IX2 (red). Black and dark yellow curves are experimental data and accumulative fitting curve, respectively. b, Extracted full width at half maximum (FWHM) of interlayer excitons as a function of excitation power. c, Extracted PL peak energy as a function of excitation power, for WS2 exciton. The negligible energy shift of the A excitons from the WS2 over the entire power range used (< 1 meV) suggests that the laser induced thermal effect in the power-dependent PL measurements was negligible and it does not affect the analysis of our power dependent PL results. The error bars in (b) and (c) represent the fitting uncertainty (standard deviations) obtained from multiple (>3) fitting analysis.
