Figure 2: Electron hopping transport in MoS₂.

Schematics of electron transport mechanism in perfect (a) and defective (b) MoS₂. In perfect MoS₂, electron density is periodic in space and transport is band-like. In defective MoS₂, however, electrons are localized near the defects and transport is through hopping. (c) Arrhenius plot of normalized conductivity (symbols) of the device in Fig. 1 and the fitting results by hopping model (lines). From top to bottom, n=25, 20, 15, 10, 5, 1 × 10¹¹ cm⁻², respectively. The curves are offset for clarity. The two hopping regimes are clearly separated by T^* (dashed vertical line). (d) T₀ and (e) T₁ obtained from the fitting of the Arrhenius plot for bare (black) and PMMA-coated (red) sample. The Arrhenius plot after PMMA coating is presented in Supplementary Fig. S10.