Figure 1
From: Enhancing and quantifying spatial homogeneity in monolayer WS2
(a) Optical image of a WS2 monolayer flake obtained using dry exfoliation onto PDMS, AFM microscopy reveals crack defects, highlighted in red boxes. (b) A typical confocal Raman spectrum for the flake in (a), taken at room temperature with \(633 \text{nm}\) excitation. (c) A typical PL spectrum, taken at 532 nm, at room temperature showing spectral components extracted using a Voigt model with fitted peak energies: \({E}_{X0}\approx 2.01 \text{eV}, {E}_{CX}\approx 1.98 \text{eV}, {E}_{LX}\approx 1.95 \text{eV}\), coefficient of determination for this fit is R2 = 0.996. More details about fitting can be found in the supplementary materials.
