ANALYTICAL APPROXIMATIONS OF NON-DEGENERATE SCHOTTKY DIODE CURRENT-VOLTAGE CHARACTERISTICS

The current–voltage characteristics of non‐degenerate Schottky diodes are analysed using the thermionic theory and allowing for quantum effects. A general expression for the current–voltage characteristic is derived, containing one analytically unsolvable integral. An evaluation of this integral in the form of the sum of three alternating series is presented. Each of these series has a clear physical meaning, corresponding to thermionic emission, thermal‐field emission, and field emission, respectively. The solution of the‐integral in the form of alternating series makes the numerical evaluation of the integral easy, and/or provides a method to derive simple analytical expressions approximating the integral, along with an easy estimation of truncation errors. Based on such approximations, analytical expressions for the voltage–current Schottky‐diode characteristics are derived. Copyright © 1979 WILEY‐VCH Verlag GmbH & Co. KGaA