“…2, ∆ is the potential drop across the dielectriclayer, λ is the electron affinity, ψ S (V ) is the surface potential, V n is the potential difference between the Fermi level and the conduction band level in the neutral region, E fs is the Fermi level of the semiconductor, E fm is the metal Fermi level, E g is the band gap, Φ B0 is the Schottky barrier height, qΦ m is the metal work function, and δ is the thickness of the dielectriclayer. [22,23] By Gauss theorem, the equation of the electric potential and surface charge of the interface layer is obtained as…”