Figure 4.
Comparison of (a) Raman and (b–d) XPS spectra between the single-crystalline MoS2 and the electron-irradiated sample (300 kGy), where Mo 3d and S 2p core-level spectra include the curve-fitting results of two components, C1 and C2, relating to the contribution of 2 H phase and electron irradiation-induced defects, respectively. BG indicates the background.