Theory of transient currents in dielectrics at a limited level of single injection. I. The case of strong injection

Abstract

The theory of transient currents in dielectric layers at a limited level of single injection is suggested. As a result of the analysis six mechanisms of the transient process are revealed, that lead to a stationary space-charge-limited current. The conditions of existence and characteristic features of each of the mechanisms are ascertained. For all stages of the transient process a complete analysis of these mechanisms typical for the strong injection case, is performed. Analytical expressions for the time behaviour of the total current, total charge, space-charge centroid, and electric field strength on the injecting interface, are obtained they correspond to the results of exact (numerical) solution of the general problem.