Abstract
Generally, the organic ferroelectric P(VDF-TrFE) thin film is partially crystallized with a mixture of ferroelectric crystallites, non-crystalline molecules, and additional non-ferroelectric crystallites, e.g., Trifluoroethylene, in the copolymers. Therefore, it is almost impossible for the domains to switch under a normal field without incurring of charge injection across these non-ferroelectric phases. In this paper, we use an equivalent-circuit description of the film consisting of a non-ferroelectric layer in series with a ferroelectric layer. Based on the polynomial fitting of polarization switching/non-switching results, we extract the intrinsic coercive field across the ferroelectric layer in the films with different thicknesses.
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