Facile recovery of ferroelectric polarization after high temperature annealing was observed in a poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) thin film on an etched Al bottom electrode which has a topographically nanostructured surface with hexagonal registry of the recessed hemispherical bowls of approximately 100 nm diameter. Fairly large remanent polarization of 10 μC cm2 was obtained after annealing up to 185 °C with the etched Al electrode, while the polarization rapidly dropped near the melting temperature of P(VDF-TrFE) (∼150 °C) with a flat Al electrode. The topographic electrode is found to facilitate the reorganization of P(VDF-TrFE) crystal under electric field.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)