Unipolar poling-induced high switching speed and improved imprint behaviors for poly(vinylidene fluoride-trifluoroethylene) copolymer ultrathin films

2013 ◽  
Vol 103 (26) ◽  
pp. 263503 ◽  
Author(s):  
Ying Hou ◽  
Zhaoyue Lü ◽  
Tiansong Pu ◽  
Yuan Zhang ◽  
Xiangjian Meng ◽  
...  
Keyword(s):  
Ultrathin Films ◽  
Vinylidene Fluoride ◽  
Switching Speed ◽  
Poly Vinylidene Fluoride ◽  
High Switching Speed

scholarly journals The Influence Mechanism of Temperature and Storage Period on Polarization Properties of Poly (Vinylidene Fluoride–Trifluoroethylene) Ultrathin Films

Membranes ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 301
Author(s):  
Xingjia Li ◽  
Zhi Shi ◽  
Xiuli Zhang ◽  
Xiangjian Meng ◽  
Zhiqiang Huang ◽  
...  
Keyword(s):  
Ultrathin Films ◽  
Remanent Polarization ◽  
Vinylidene Fluoride ◽  
Storage Period ◽  
Testing Temperature ◽  
Fatigue Properties ◽  
Inhibition Mechanism ◽  
Poly Vinylidene Fluoride ◽  
High Level ◽  
And Storage

The effect of testing temperature and storage period on the polarization fatigue properties of poly (vinylidene fluoride-trifluoroethylene) (P(VDF–TrFE)) ultrathin film devices were investigated. The experimental results show that, even after stored in air for 150 days, the relative remanent polarization (Pr/Pr(0)) of P(VDF–TrFE) of ultrathin films can keep at a relatively high level of 0.80 at 25 °C and 0.70 at 60 °C. To account for this result, a hydrogen fluoride (HF) formation inhibition mechanism was proposed, which correlated the testing temperature and the storage period with the microstructure of P(VDF–TrFE) molecular chain. Moreover, a theoretical model was constructed to describe the polarization fatigue evolution of P(VDF–TrFE) samples.

Effect of Interface and Crystallinity on the Ferroelectric Properties of Poly(Vinylidene Fluoride-Trifluoroethylene) Copolymer Thin Films

2001 ◽  
Vol 665 ◽  
Author(s):  
Feng Xia ◽  
H.S. Xu ◽  
Babak Razavi ◽  
Q. M. Zhang
Keyword(s):  
Thin Films ◽  
Vinylidene Fluoride ◽  
Ferroelectric Properties ◽  
Large Change ◽  
Thickness Dependence ◽  
Dielectric Measurement ◽  
Switching Speed ◽  
Wide Range ◽  
Poly Vinylidene Fluoride ◽  
Polarization Level

ABSTRACTFerroelectric polymer thin films are attractive for a wide range of applications such as MEMS, IR sensors, and memory devices. We present the results of a recent investigation on the thickness dependence of the ferroelectric properties of poly(vinylidene fluoridetrifluoroethylene) copolymer spin cast films on electroded Si substrate. We show that as the film thickness is reduced, there exist two thickness regions. For films at thickness above 100 nm, the thickness dependence of the ferroelectric properties can be attributed to the interface effect. However, for thinner films, there is a large change in the ferroelectric properties such as the polarization level, the coercive field, and polarization switching speed, which is related to the large drop of the crystallinity in the ultrathin film region (below 100 nm). The results from Xray, dielectric measurement, and AFM all indicate that there is a threshold thickness at about 100 nm below which the crystallinity in the film reduces abruptly.

Temperature dependence of imprint mechanism in poly(vinylidene fluoride-trifluoroethylene) copolymer ultrathin films

2014 ◽  
Vol 104 (10) ◽  
pp. 103505 ◽  
Author(s):  
Xiuli Zhang ◽  
Xiaoli Du ◽  
Ying Hou ◽  
Zhaoyue Lü ◽  
Haisheng Xu
Keyword(s):  
Temperature Dependence ◽  
Ultrathin Films ◽  
Vinylidene Fluoride ◽  
Poly Vinylidene Fluoride

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

Polymers ◽  
2017 ◽  
Vol 10 (1) ◽  
pp. 6 ◽  
Author(s):  
Long Li ◽  
Xiuli Zhang ◽  
Hongzhen Chen ◽  
Xiaohui Sun ◽  
Haidong Yuan ◽  
...  
Keyword(s):  
Ultrathin Films ◽  
Vinylidene Fluoride ◽  
Structure Effect ◽  
Ferroelectric Capacitor ◽  
Poly Vinylidene Fluoride
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