On thermally stimulated currents under dispersive transport regime — trap saturation effects

Numerical study of the dependence of thermally stimulated currents in disordered solids on initial trap occupancy

“…Subject to the conditions that the carrier retrapping is negligible and the kinetics of carrier recombination has a monomolecular character, the trap density per energy unit, N t (ε), and the TSC conductivity, σ TSC (T), are interrelated by [10]:…”

“…The applicability of the method requires, among others, almost complete filling of traps by excess carriers at the onset of TSC experiment. The alternate theories of TSCs, based on the MT model and assuming negligibly small or fractional initial trap occupancy, have been developed in [8][9][10]. Therefore, it seems desirable to study the dependence of TSCs on the extent of initial trap filling and establish the range of validity of the mentioned theories.…”

Thermally stimulated currents in amorphous solids due to complex heating regimes

“…In the most commonly used theory of Fritzsche and Ibaraki [1], improved by other authors [4,6], the carrier retrapping was ignored or treated in an approximate manner. In other theories the processes of carrier trapping/release were described by simplified equations, corresponding either to strongly non-equilibrium [8][9][10] or to quasi-equilibrium [11] distributions of trapped carriers. An alternative theory, assuming hopping carrier transport, was developed by Baranovskii et al [7].…”