An adiabatic model of dispersive hopping transport II. Dispersive carrier recombination in hopping systems

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Abstract
A model of dispersive hopping recombination is presented. Carrier recombination under a non-equilibrium conditions is shown to have characteristic features of an adiabatic process. Time dependencies of carrier density and transient photocurrent are governed by the time dependence of the density of “deep” localized states. An adiabatic equation of dispersive recombination is derived. The general results are applied to the low-temperature recombination and to systems having an exponential distribution of localized states.