Figure 3
From: Enhancing and quantifying spatial homogeneity in monolayer WS2
Illumination-time dependence for a small monolayer region studied using time-stepped PL maps. (a) Fitted PL intensity, (b) \({S}_{X0}\) and (c) \({S}_{CX}\) maps extracted at different laser illumination times. From top to bottom: \(t=0 s\) (before laser illumination) and after repeated laser illumination time steps \(t=2.5 s\), \(5 s\), \(7.5 s\) and \(10 s\). Histograms of \({S}_{CX}\) and \({S}_{X0}\) values from each map are plotted in column (d). Correlation statistics between the PL intensity and each of the spectral weighting maps \({S}_{CX}\) and \({S}_{X0}\) are extracted and plotted against the laser illumination time in (e), with the absolute value taken for \(\rho (PL,{S}_{CX})\).
