Modelling of space charge, electroluminescence and current in low density polyethylene under DC and AC field

A numerical model for describing bipolar charge transport and storage in polyethylene has been put forward recently. The aim of this communication is to present the model outputs obtained for a step increase voltage, and a polarization-depolarization protocol under a DC field. AC simulation was also tried on the basis of the model parameters that were derived from the DC model. The numerical results shown here are directly compared with experimental data from PEA, electroluminescence and current measurements. Finally, we discuss model limitations and possible improvements.