We now aim to further increase the speed of photodetection with multilayer WSe2 by reducing the device dimensions and, thus, the capacitance. With reference to the parameters used in the formula for the capacitance by Nabet et al. used above, we reduce the electrode width (w) from 10 to 1 µm, the channel length (g) from 2.5 to 1 µm, and the channel width (L) from 25 µm to 20 µm, cf. Figure for a scheme of the geometrical parameters. This action decreases the expected capacitance For the WSe2 detector a bias voltage of 0.5 V is applied, for the diode 5 V in reverse bias direction.