中国物理B ›› 2010, Vol. 19 ›› Issue (10): 107702-107702.doi: 10.1088/1674-1056/19/10/107702

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

罗晓雅, 张吉皓, 严学俭, 朱国栋   

  1. Department of Materials Science, Fudan University, 220 Handan Road, Shanghai 200433, China
  • 收稿日期:2010-03-10 修回日期:2010-04-21 出版日期:2010-10-15 发布日期:2010-10-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10804020) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 200802461088).

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

Luo Xiao-Ya(罗晓雅), Zhang Ji-Hao(张吉皓), Yan Xue-Jian(严学俭), and Zhu Guo-Dong(朱国栋)   

  1. Department of Materials Science, Fudan University, 220 Handan Road, Shanghai 200433, China
  • Received:2010-03-10 Revised:2010-04-21 Online:2010-10-15 Published:2010-10-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10804020) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 200802461088).

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.

Abstract: 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.

Key words: ferroelectric polymer, polarization fatigue, switching time, charge transfer

中图分类号:  (Polymers; organic compounds)

  • 73.61.Ph
77.22.Ej (Polarization and depolarization) 77.80.Fm (Switching phenomena) 77.84.Jd (Polymers; organic compounds)