Facile Preparation of Ferroelectric Poly(Vinylidene Fluoride-co-Trifluoroethylene) Thick Films by Solution Casting
- Authors
- Ahn, Gun; Kim, Su Ran; Choi, Yoon-Young; Song, Han Wook; Sung, Tae-Hyun; Hong, Jongin; No, Kwangsoo
- Issue Date
- Feb-2014
- Publisher
- WILEY
- Citation
- POLYMER ENGINEERING AND SCIENCE, v.54, no.2, pp.466 - 471
- Indexed
- SCIE
SCOPUS
- Journal Title
- POLYMER ENGINEERING AND SCIENCE
- Volume
- 54
- Number
- 2
- Start Page
- 466
- End Page
- 471
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/160713
- DOI
- 10.1002/pen.23570
- ISSN
- 0032-3888
- Abstract
- 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.
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