Extended Data Fig. 1: Raman spectroscopy of monolayer MoS2.
From: Active pixel sensor matrix based on monolayer MoS2 phototransistor array
a, Raman spectra, and b, corresponding spatial colormap of peak separation between the two Raman active modes, \(E_{2{{{\mathrm{g}}}}}^1\) and A1g, c, PL spectra, and d, corresponding spatial colormap of PL peak position measured over a 40 µm × 40 µm area for post-transfer MoS2 film. The mean Raman peak separation was found to be ~20 cm−1 with a standard deviation of ~0.72 cm−1 and the mean PL peak position was found to be at ~1.83 eV with a standard deviation of ~0.005 eV for the post-transfer film, respectively. Bar plots for e, the mean peak separation between \(E_{2{{{\mathrm{g}}}}}^1\) and A1g Raman modes and f, mean PL peak position along with their corresponding standard deviation values for as-grown and post-transfer films obtained over 40 µm × 40 µm areas for 5 different locations.
