The Influence of Ultraviolet Irradiation on Polarization Fatigue in Ferroelectric Polymer Films

Author

Fu, Shao Song ; Yu, Hao ; Luo, Xiao Ya ; Jiang, Yu Long ; Zhu, Guo Dong

Author_Institution

Dept. of Mater. Sci., Fudan Univ., Shanghai, China

Volume

33

Issue

1

fYear

2012

Firstpage

95

Lastpage

97

Abstract

In this letter, we report the influence of ultraviolet (UV) irradiation on electrical fatigue in ferroelectric polymers. Experiments indicate that ferroelectric polymer films exposed to UV irradiation show degraded fatigue endurance. However, simultaneous application of UV light and bias voltage (V_bias) can partially recover the electrical polarization in fatigued films. In our present work, a combination of UV (365 nm) and V_bias ( -51 V) has resulted in the restoration of remanent polarization up to 85.3% of its original value in 1200 s. The influence of V_bias on polarization restoration is also reported. UV effects are explained based on the understanding of charge influence on ferroelectric fatigue.

Keywords

dielectric polarisation; ferroelectric thin films; ferroelectricity; polymer films; ultraviolet radiation effects; UV effects; UV light; bias voltage; electrical fatigue; electrical polarization; fatigue endurance; ferroelectric fatigue; ferroelectric polymer films; polarization fatigue; remanent polarization restoration; time 1200 s; ultraviolet irradiation; voltage -51 V; wavelength 365 nm; Acceleration; Electron traps; Fatigue; Photonic band gap; Polymers; Radiation effects; Switches; Ferroelectric polymer; polarization fatigue; polarization restoration; ultraviolet (UV) irradiation;

fLanguage

English

Journal_Title

Electron Device Letters, IEEE

Publisher

ieee

ISSN

0741-3106

Type

jour

DOI

10.1109/LED.2011.2172912

Filename

6088001