Charge Response of Ferroelectric Polymers Using Graphene-Based Electrodes

Conductive graphene-based electrodes are used to study the electrophysical high-voltage characteristics of a ferroelectric copolymer of vinylidene fluoride adn tetrafluoroethylene. It is shown that ultrasonic treatment of graphene-based ink prior to deposition alters the charge and current response curves during film polarization using a bipolar rectangular electric field pulse. There is a tendency for preliminary sonication of the ink to reduce both the quasi-stationary current and the polarization near saturation.