Figure 2 | Scientific Reports

Figure 2

From: Defects activated photoluminescence in two-dimensional semiconductors: interplay between bound, charged and free excitons

Figure 2

(a). Nano-Auger spectrum taken on a monolayer MoS2 before and after irradiation with α particles at a dose of 8 × 1013 cm−2. (b). Raman spectrum of the same. (c). PL spectrum for pristine and irradiated monolayer MoS2 at the shown irradiation doses. The PL was taken at 77 K in N2 (50 Torr) environment with a constant laser excitation power. The irradiation-caused enhancement in bound exciton (XB) and free exciton (X0) emission intensity is indicated.

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