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Polymers 2018, 10(1), 6;

Modeling of Structure Effect for Ferroelectric Capacitor Based on Poly(vinylidene fluoride-trifluoroethylene) Ultrathin Films

School of Mathematics, Physics and Statistics, Shanghai University of Engineering Science, Shanghai 201620, China
School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Hong Kong, China
Department of Physics, East China University of Science and Technology, Shanghai 200237, China
Kunshan Hisense Electronics Co., Ltd., Kunshan 215300, China
Authors to whom correspondence should be addressed.
Received: 2 November 2017 / Revised: 30 November 2017 / Accepted: 7 December 2017 / Published: 22 December 2017
(This article belongs to the Special Issue Fluorinated Polymers)
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The characteristics of ferroelectric capacitors with poly(vinylidene fluoride-trifluoroethlene) (P(VDF-TrFE)) films have been studied at different structures of cell electrodes. It is suggested that the effect of electrode structures could induce changes of performance. Remarkably, cells with line electrodes display a better polarization and fatigue resistance than those with flat electrodes. For P(VDF-TrFE) ultrathin films with different electrode structures, the models of charge compensation mechanism for depolarization field and domain fatigue decomposition are used to explain the effect of electrode structure. Furthermore, the driving voltage based on normal speed-functionality is designed, and the testing results show that the line electrode structure could induce a robust switching, which is determined by the free charges concentration in active layer. These findings provide an effective route to design the optimum structure for a ferroelectric capacitor based on P(VDF-TrFE) copolymer ultrathin film. View Full-Text
Keywords: P(VDF-TrFE); polarization; depolarization field; fatigue P(VDF-TrFE); polarization; depolarization field; fatigue

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Li, L.; Zhang, X.; Chen, H.; Sun, X.; Yuan, H.; Xu, H. Modeling of Structure Effect for Ferroelectric Capacitor Based on Poly(vinylidene fluoride-trifluoroethylene) Ultrathin Films. Polymers 2018, 10, 6.

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