Measurement of ionic mobility in polymeric insulators

Carrier mobility measurements have been performed on PVDF films using a variety of techniques including step-voltage current transients, steady-state conductivity values. The polarity-reversal technique and the voltage-ramp method. The range of mobilities obtained at 70°C was from 3.9 × 10⁻¹⁴ cm²V⁻¹s⁻¹ to 1.2 × 10⁻⁷ cm²V⁻¹s⁻¹ depending on the theory employed, which served to demonstrate the ambiguity of the concept in the absence of definitive information on trap parameters.