Abstract
We obtained local optical absorption spectra of MoS2 with a spatial resolution of approximately 200 nm using scanning near-field optical microscopy with a supercontinuum laser light source, and we found that the absorption spectra exhibited a significant site dependence on the MoS2 monolayer crystal. We found clear relationships between local optical absorption spectra and photoluminescence intensities. At a site that exhibited a weak photoluminescence, the intensity of the A exciton optical absorption was also weak, and its line shape was significantly deformed, which suggests the influence of n-doping. The results indicate a significant inhomogeneity in the n-doping levels on a single sheet.
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