Fig. 2: Layer-dependent electronic properties of undoped WSe2.
From: Layer-dependent Schottky contact at van der Waals interfaces: V-doped WSe2 on graphene
a STM image of undoped monolayer WSe2 at VB = 1.4 V. b Layer dependent STS signal of undoped WSe2. c The experimentally determined conduction band edge, valence band edge, and band gap of undoped WSe2 as a function of layer count (markers). The experimental data in (c) is fitted with the tight binding model presented in the text (dashed lines). d The energy of each plateau identified in the STS of undoped WSe2 plotted versus the corresponding number of hole band edge n in the quantum well model.
