On the possible role of mobile defects in the long-range electron transfer in solids

About the role played by mobile nanovoids in the stimulation of solid-state processes

“…5). It was also shown in [26] that, in the system studied at Т = 138 K (lower by 15 K than the temperature of its vitrification), not only initial elec tron traps that captured electrons but also electron acceptors were almost immobile. This excludes from consideration also model (2) (see above) of electron transfer through large distances as a possible model of e tr transfer through large distances to electron acceptors.…”

“…Since none of the mentioned models could help us with explanation of the experimental results obtained in [28], a new transfer model was suggested in [26]. The determining participation in the process under consideration is assigned to a small (compared with electron donors and acceptors) amount of mobile electron traps present in the system in the form of nanovoids.…”

“…An analysis performed in [26] showed that no adjustment parameter values in models (1) and (3) (see the beginning of this section) can be used to describe the experimental curve [28] of the depen dence of the L[E i (λ i )] parameter on wavelength λ i of the corresponding electronic spectrum component (compare calculated curves 1-3 with the experimental curve in Fig. 5).…”

“…Description and analysis of a large number of experimental and theo retical studies in this area are given in monographs [24,25] with the inclusion of original works in which the transfer of e tr through anomalously large (from the point of view of classical concepts of elementary chemical reactions) distances (of several nm) was observed and theoretically analyzed. Before our work [26], three models of electron transfer through large distances were suggested and discussed:…”

“…The original model of electron transfer through large distances with the help of mobile nanovoids, which inter cept electrons from initial immobile traps at small dis tances R(Е Don ) is described in more detail and more rea sonably in [1,26]. It was shown in these works that, when this model is used with the d D [D] = 2 ⋅ 10 12 cm -1 s -1 adjustment parameter ([D] is the concentration of mobile nanovoids), we obtain excellent agreement between the curve calculated using the model from [26] and the experimental curve [28] (see Fig.…”