Extraction of Intrinsic Electrical Parameters in Partially Depleted MoS2 Field-Effect Transistors

Electrical performance and transport mechanisms in 2-D transition-metal dichalcogenide materials should be investigated under a range of electrical parameters for practical application. In this paper, partially depleted (PD) molybdenum disulfide (MoS
₂
) transistors were fabricated with a thick flake mechanically exfoliated from bulk crystals, and their operating mechanism is discussed considering the gate-uncontrollable conduction channel, the maximum depletion width (D
_max
), and the impact of series resistance (R
_sd
). In addition, the intrinsic mobility of a neutral bulk channel in PD-MoS
₂
transistors was extracted from the simply separated gate-controllable drain current with a depletion approximation.