Figure 4
Responsivity peaks.
(a) Stacked 2D color plots (color scale individually optimized for each plot) for 1L, 25L and 50L MoS2 devices, with 1L to 50L responsivity peak locations (dark red: positive peaks; blue: negative peaks) extracted (also shown are their projections onto the bottom d2–d3 plane and selected drop lines). The data range corresponds to the dashed box in Fig. 3c 50L plot. (b) Magnitude of peak responsivity, both positive (wine) and negative (blue), as function of device thickness (d1) and vacuum gap depth (d2), as well as data projection onto the three orthogonal planes. Drop lines for the 1L and 50L data points are shown.
