On the theory of long-range electron hopping in polar media

✍ Scribed by A. M. Kuznetsov; J. Ulstrup

• Publisher: John Wiley and Sons
• Year: 1982
• Tongue: English
• Weight: 710 KB
• Volume: 114
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.2221140246

✦ Synopsis

Abstract

Expressions for the probability of a nonadiabatic electron transfer between a donor‐trap and an acceptor‐trap in a polar medium are obtained. The transition probability is expressed in terms of the zeroth‐order electron densities near the traps. The interaction of the electron with the phonon field is analyzed. A way of definition and calculation of the zeroth‐order electron states with due account for their modulation by the phonon field is suggested. The effects of deviation from the Condon approximation due to the modulation of the electron densities and of the interaction with the phonon field causing the transition are estimated. The effects of this modulation on the kinetic parameters of the transition in the Condon approximation and in the improved Condon approximation are analyzed. It is shown that these effects are rather large for the processes involving solvated, trapped, or weakly bound electrons. The deviations from the Condon approximation should be taken into account for long‐range electron transfer.