Fig. 4: Electrical performance of WSe2 transistors using different metal contacts.
From: Wafer-scale and universal van der Waals metal semiconductor contact
a, b The drain source current- gate source voltage (Ids − Vgs) transfer curve and drain source current- drain source voltage (Ids − Vds) output curve of WSe2 transistors with vdW integrated Pd electrodes (a), as well as evaporated Pd electrodes (b). c–e Extraction of threshold voltage (Vth) (c) on-state current densities (d), and current on-off ratios (e). Error bars in c–e are determined from the statistical standard deviations of 5 devices. f Transconductance (Gm) as a function of Vgs with different vdW metals.
