Schematic band diagram of the structure metal-PS-Si(P) according to Ben-Chorin et al.: (a) equilibrium state, (b) forward bias (V+), (c) reverse bias (V−). The Fermi level is represented by the dashed lines. The PS surface states are symbolized by filled circles and single dashes corresponding to occupied and free states, respectively.
Menard et al. Nanoscale Research Letters 2012 7:566 doi:10.1186/1556-276X-7-566