Abstract

A theory of isothermal depolarization of insulators based on dispersive transport through traps (exponentially distributed in energy) is developed. Equations for the dependence of flat-band voltage on time have been obtained. It is shown that the depolarization process takes place during a sufficiently long time (over about six decades of time). Equations for the “energy activation” of the depolarization process increasing with time and decreasing with temperature and electric field have been obtained. Experimental data for MNOS structures are explained on the basis of the dispersive transport theory.

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