Extended Data Fig. 7: Gate dependence of SPE linewidth.

The full width at half maximum (FWHM) of the chosen peak in Extended Data Fig. 5a is plotted against the applied top gate voltage. The red line is a guide for the eye. The reduction of linewidth indicates suppression of blinking due to nonradiative decay pathways. The linewidth is obtained by fitting the PL spectrum (~70 data points for every voltage). The error bars are the standard deviation of the linewidth obtained from the fitting.