Facile Preparation of Ferroelectric Poly(Vinylidene Fluoride-co-Trifluoroethylene) Thick Films by Solution Casting

We investigated the effects of annealing temperature and vacuum treatment on the crystallinity and ferroelectric properties of solution-casted poly(vinylidene-fluoride-co-trifluoroethylene), P(VDF-TrFE), thick films. We varied the annealing temperature from 70 degrees C to 150 degrees C and achieved high-quality ferroelectric thick films annealed at 130 degrees C. Ferroelectric domains and their properties were confirmed using X-ray diffraction, Fourier transform infrared spectroscopy with attenuated total reflection mode and ferroelectric/piezoelectric measurement systems. Drying and/or annealing in the vacuum allowed for the improvement of crystallinity and ferroelectric/piezoelectric properties. Importantly, the piezoelectric coefficient, d(33), of our optimal P(VDF-TrFE) films after sufficient poling treatment was 36 pC/N and our P(VDF-TrFE) power generator produced an output voltage of similar to 6 V under periodic bending and unbending motions.
Publisher
WILEY-BLACKWELL
Issue Date
2014-02
Language
ENG
Keywords

FLUORIDE TRIFLUOROETHYLENE COPOLYMER; VINYLIDENE FLUORIDE; FLUORIDE-TRIFLUOROETHYLENE); CRYSTALLINE; DEPENDENCE; TRANSITION; POLYMERS; LAYERS

Citation

POLYMER ENGINEERING AND SCIENCE, v.54, no.2, pp.466 - 471

ISSN
0032-3888
DOI
10.1002/pen.23570
URI
http://hdl.handle.net/10203/189233
Appears in Collection
MS-Journal Papers(저널논문)
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