Time of flight analysis of charge transport in insulators for a finite width charge packet with trapping

Abstract

The problem solved concerns the transient unipolar charge flow in an insulator device with deep level traps. The analysis is performed here for a finite width, nondispersive charge packet, drifting due to an externally applied electric field. Novel features of the “charge splitting theorem” emerging in the trapping domain are discussed. The detailed shapes of the current transients are compared to experimental data. The fitting of theory to experimental results give important parameters which characterize the charge transport in molecularly doped polymers (MDP).