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. 2021 Jul 16;11:14618. doi: 10.1038/s41598-021-94078-8

Figure 5.

Figure 5

Mechanism for “hump” formation in the transfer characteristics after deep UV light (λ = 172 nm) radiation. (a) Schematic transfer characteristics showing the contributions of the back and front channel currents to the total current (Back + Front). (b) Off-state current increases due to the flow of holes from the drain (D) to the source (S) when VGS is negative (region I). (c) Only the backchannel is conducting when VGS is close to zero volts (region II). (d) Both the back and front channels are conducting when VGS is positive (region III).