Fig. 2: Photoluminescence (PL) spectra analysis of the irradiation effect on monolayer MoS2. | npj 2D Materials and Applications

Fig. 2: Photoluminescence (PL) spectra analysis of the irradiation effect on monolayer MoS2.

From: Electron irradiation-induced defects for reliability improvement in monolayer MoS2-based conductive-point memory devices

Fig. 2

a The PL spectra of monolayer MoS2 with different radiation doses up to 105 μC/cm2. The peak for unirradiated sample at ~1.85 eV is consistent with previous reports for monolayer MoS2. b The relationship between PL peak position and radiation dose. A red shift can be observed as dose increases. c The relationship between PL peak intensity and radiation dose. A decrease of peak intensity can be observed as dose increases. These suggest sulfur vacancies are introduced to the MoS2 film after irradiation. The PL spectra are measured on three different locations for each dose to compensate for variation from material growth.

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