Radiation-induced charge transport in polymer electrets

The mobilities of electrons and holes prove to be important parameters for the numerical results of our physical model. Experimental data for electron-beam-irradiated FEP, PETP, and PVDF foils could be clearly identified with three special cases of the general model: In FEP, the mobility of the electrons is small compared to the mobility of the holes, while in PETP the opposite is true. In PVDF, both charge carriers are mobile and their mobilities are of the same order. Quantitative agreement between theory and experiment has already been achieved for FEP [1]; parameter fitting for PETP and PVDF is presently under way,