Polarization fatigue in poly(vinylidene fluoride (78%)-trifluoroethylene (22%)) ferroelectric thin films: a pulse train study

被引：3
|
作者：
Luo Xiao-Ya [1 ]
Zhang Ji-Hao [1 ]
Yan Xue-Jian [1 ]
Zhu Guo-Dong [1 ]
机构：
[1] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China
来源：
CHINESE PHYSICS B | 2010年 / 19卷 / 10期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
ferroelectric polymer; polarization fatigue; switching time; charge transfer; TRIFLUOROETHYLENE COPOLYMER FILMS; VINYLIDENE FLUORIDE; INTERFACE; TRANSISTOR; DEPENDENCE; REVERSAL;
D O I：
10.1088/1674-1056/19/10/107702
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
This paper investigates the influences of polarization fatigue on remanent polarization and switching time by pulse train measurements in ferroelectric poly(vinylidene fluoride (78%) and trifluoroethylene (22%)) thin films. Fatigue was carried out by a series of bipolar switching pulses with constant pulse width (on-time) and various interval times between pulses (off-time). The experimental observations indicated that the off-time period showed no obvious influence on fatigue rate and the switching time increased with the increase of fatigue cycles. The origination of these phenomena was discussed according to the charge injection model.
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页数：6
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