Accurate quasi static capacitance for abrupt homojunction under forward and reverse polarization

摘要

In this work, we present a new approach to derive the capacitance-voltage characteristic for an abrupt homojunction with uniform doping {N_A in p-region and N_D in n-region) under forward and reverse polarization. Under thermal equilibrium conditions, we show that it is possible to obtain analytically the exact capacitance-voltage characteristic without any simulation for the symmetric case (N_a = N_D). We also propose a model of the total capacitance under forward and reverse polarization for the asymmetric case (N_a # N_D).