Fig. 3: Strain-induced variation of QEs’ intensity.
From: Strain-induced exciton redistribution among quantum emitters in two-dimensional materials
a Color-map of the maximum PL intensity as a function of the external electric field Fp. The spectra are collected on a pillar while a back-and-forth scan of Fp from 0 to 15 kV/cm is performed. b PL spectra at 0 and 15 kV/cm. A QE1 (QE2) darkening (brightening) is observed at 15 kV/cm. c–d Maximum PL intensity as a function of Fp for both QE1 and QE2, respectively. The intensity of the two emitters shows two main features: (i) while QE1 decreases for increasing Fp, QE2 increases, and (ii) the intensity of both QEs goes back to the initial value, suggesting that the process is reversible.
