Polarization fatigue of organic ferroelectric capacitors

被引：73

作者：

Zhao, Dong ^{[1
]}

Katsouras, Ilias ^{[1
]}

Li, Mengyuan ^{[1
,2
]}

Asadi, Kamal ^{[1
]}

Tsurumi, Junto ^{[3
,4
]}

Glasser, Gunnar ^{[1
]}

Takeya, Jun ^{[4
]}

Blom, Paul W. M. ^{[1
]}

de Leeuw, Dago M. ^{[1
,5
]}

机构：

[1] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

[2] Univ Groningen, Zernike Inst Adv Mat, NL-9747 AG Groningen, Netherlands

[3] Osaka Univ, Dept Appl Phys, Suita, Osaka 5650871, Japan

[4] Univ Tokyo, Dept Adv Mat Sci, Kashiwa, Chiba 2778561, Japan

[5] King Abdulaziz Univ, Jeddah 22254, Saudi Arabia

来源：

SCIENTIFIC REPORTS | 2014年 / 4卷

关键词：

VINYLIDENE FLUORIDE;

D O I：

10.1038/srep05075

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The polarization of the ferroelectric polymer P(VDF-TrFE) decreases upon prolonged cycling. Understanding of this fatigue behavior is of great technological importance for the implementation of P(VDF-TrFE) in random-access memories. However, the origin of fatigue is still ambiguous. Here we investigate fatigue in thin-film capacitors by systematically varying the frequency and amplitude of the driving waveform. We show that the fatigue is due to delamination of the top electrode. The origin is accumulation of gases, expelled from the capacitor, under the impermeable top electrode. The gases are formed by electron-induced phase decomposition of P(VDF-TrFE), similar as reported for inorganic ferroelectric materials. When the gas barrier is removed and the waveform is adapted, a fatigue-free ferroelectric capacitor based on P(VDF-TrFE) is realized. The capacitor can be cycled for more than 108 times, approaching the programming cycle endurance of its inorganic ferroelectric counterparts.

引用

页数：7

共 24 条

[1] ELECTRIC FIELD-INDUCED GAS EMISSION FROM PVDF FILMS [J].