S. Searles et al., ANALYTICAL EXPRESSIONS FOR THE TUNNEL CURRENT AT ABRUPT SEMICONDUCTOR-SEMICONDUCTOR HETEROJUNCTIONS, I.E.E.E. transactions on electron devices, 44(11), 1997, pp. 1851-1856
Analytical expressions for the tunnel current in abrupt semiconductor
heterojunctions are derived. These expressions, which give results in
good agreement with numerical calculations, should prove helpful in th
e construction of compact models for devices in which tunneling is imp
ortant.