Figure 6
From: Charge transport mechanism in dielectrics: drift and diffusion of trapped charge carriers
Configuration diagram for two phonon-coupled traps. \(U_{\text {f}}(Q)\) is the potential energy of an empty oscillator (without trapped electron); \(U_{\text {b}}(Q)\) is the potential energy of an occupied oscillator (with trapped electron); \(\varepsilon (Q)\) is the position of the energy level of the trapped electron dependent on coordinate Q; and \(E_{\text {c}}\) is the conduction-band edge. The solid and dotted lines refer to the initially occupied and empty state, respectively. The most probable tunnelling transition for the electron when both oscillators take position \(Q_0/2\) is shown by the horizontal dashed arrow.
