The role of electron-phonon interaction and non-Gaussian transport in spectral changes of trapped electrons in glasses

The continuous-time-random-walk (CTRW) model which was developed for electron scavenging reactions in polar glasses is extended to the phenomenon of spectral relaxation of electrons in shallow traps esub(t)- in a wider range of systems. The central role of electron-phonon coupling in understanding the initial electron localization, the ''pre-existing trap'', and electron transfer processes are emphasized. The reactivity of esub(t)- with scavengers, including protons, is discussed in terms of the theory of multi-phonon non-radiative transitions. (author)