Time of flight transient analysis in a molecular doped polymer using a dispersive-trapping formalism

Abstract

The spatio-temporal spreading features of charge packets from time of flight (TOF) current transients in a molecular doped polymer system are analysed based on TOF current modelling and experimental results related to the thermal and electric field dependences of the dispersion parameters as well as the charge carrier mobility. The parameters describing the charge spatial spread are the velocity distributions within the moving charge packet, the trapping time and the trapping lengths. These parameters supplement our understanding of charge transport in these systems in addition to our previous experimental mobility investigations.