Figure 5: The percolation transition and charge traps in monolayer and trilayer MoS2. | Nature Communications

Figure 5: The percolation transition and charge traps in monolayer and trilayer MoS2.

From: Probing the electron states and metal-insulator transition mechanisms in molybdenum disulphide vertical heterostructures

Figure 5

(a) Ct of a monolayer MoS2 measured at an excitation frequency 1 kHz and excitation voltage 50 mV for different temperatures. (b) Ct of a trilayer MoS2 measured at an excitation frequency 100 kHz. (c) Ct of a trilayer MoS2 measured for different excitation frequencies at 2 K, indicating that the charge traps are excited at low frequencies. The inset shows Ct measured at 300 K. (d) The charge-trap densities Dit as a function of Vg calculated for the monolayer and trilayer MoS2 samples. The arrows denote the transition points.

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