Analysis of vinylidene fluoride–trifluoroethylene copolymer film for nonpolarized energy harvester. (2nd June 2017)

• Record Type: Journal Article
• Authors: Kamata, Yuki; Sekiguchi, Tetsushi; Nakajima, Takashi; Sasaki, Toshio; Dong-Hyun, Yoon; Tanaka, Daiki; Shoji, Shuichi
• Is Part Of: Japanese journal of applied physics. Volume 56:Number 7(2017)
• Publication Date: 2017-06-02
• Subjects: Physics -- Periodicals; 621.05
• DOI: 10.7567/JJAP.56.070301
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: In this paper, an investigation of a vinylidene fluoride–trifluoroethylene (VDF/TrFE) copolymer film for use in a nonpolarized energy harvester is presented. The Fourier transform infrared spectroscopy and X-ray diffraction analysis of a nonpolarized VDF/TrFE copolymer film indicate that polymer crystallinity depends on film thickness. Furthermore, the growth of the polar structure (β phase) is observed upon the reduction in the thickness. However, power generation does not exhibit a linear behavior because the generation capacity increases with the thickness. These results indicate that the film thickness for a nonpolarized harvester must be optimized to obtain the maximum output.