Huge electrocaloric effect in Langmuir-Blodgett ferroelectric polymer thin films

被引：92

作者：

Liu, P. F. ^{[1
,2
]}

Wang, J. L. ^{[1
]}

Meng, X. J. ^{[1
]}

Yang, J. ^{[1
]}

Dkhil, B. ^{[2
]}

Chu, J. H. ^{[1
]}

机构：

[1] Chinese Acad Sci, Natl Lab Infrared Phys, Shanghai Inst Tech Phys, Shanghai 200083, Peoples R China

[2] Ecole Cent Paris, Lab Struct Proprietes & Modelisat Solides, UMR CNRS 8580, F-92290 Chatenay Malabry, France

来源：

NEW JOURNAL OF PHYSICS | 2010年 / 12卷

基金：

上海市自然科学基金;

关键词：

POLY(VINYLIDENE; PIEZOELECTRICITY;

D O I：

10.1088/1367-2630/12/2/023035

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this work, we studied polyvinylidene fluoride (PVDF)-based ferroelectric copolymer and terpolymer films grown, by the Langmuir-Blodgett (LB) technique, on polyimide substrates. The LB technique is believed to improve the film quality, i.e. to confer better crystallinity and less parasitic amorphous phase. As a consequence, a reversible adiabatic temperature change Delta T up to 21K is demonstrated. The large electrocaloric effects of LB films close to room temperature suggest the potential for applying LB films in cooling systems.

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页数：8

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