Dielectric and Ferroelectric Properties of P(VDF-TrFE) Films with Different Polar Solvents
J. Korean Phy. Soc. 2019; 74: 78~81
Published online January 15, 2019 © 2019 The Korean Physical Society.

Department of Physics, Inha University, Incheon 22212, Korea
Correspondence to: Jong Hoon Jung
We investigated the effects of polar solvents on the structural, dielectric, and ferroelectric properties of P(VDF-TrFE) films. DMF solvent results in a thin film with a rough surface, a high dielectric constant and a high coercive field. THF solvent results in a thick film with a flat surface, a low dielectric constant and a low coercive field. The ferroelectric domain switching of the films can be modeled by using a classical KAI model with similar domain-wall energies. Ferroelectric polarization of P(VDF-TrFE) films for both solvents shows a long-term retention stability up to 105 s and fatigue stability up to 107 cycles.
PACS numbers: 77.84.Jd, 77.80.Jk, 77.22.Ej
Keywords: Polar solvents, P(VDF-TrFE), Ferroelectric switching, Retention, Fatigue resistance

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