Extended Data Fig. 2: Electric field dependent PL spectra at excitation intensities from 0.25 µW/µm2 (a) to 660.4 µW/µm2 (p).
The extracted PL peak positions are shown as white dots. All photon energy axes share the same scale as shown in the bottom row for consistent comparison of peak shifts. The measurements were performed at a temperature of 3.6 K.
