Journal
NANO LETTERS
Volume 20, Issue 9, Pages 6651-6659Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c02488
Keywords
epttaoctal growth; ferroelectric polymer; chitin; PVDF-TrFE; trtboelectrte
Categories
Funding
- National Research Foundation of Korea (NRF) - Ministry of Science and Information & Communication Technology (MSIP) [NRF-2019R1A2C2007311, NRF-2017M3D9A1073922, NRF-2019R1A2C108989311]
- Leading Foreign Research Institute Recruitment Program through the NRF - MSIP [2017K1A4A3015437]
- ERC [NRF-2014R1A5A1009799]
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Tailoring the crystal orientation of poly(vinylidene fluoride-co-trifluoroethylene) (PVDF-TrFE) has attracted wide-spread interest because of its effects on the ferroelectric properties required for various electronic devices. In this study, we investigated the epitaxial growth of PVDF-TrFE on a chitin film for developing triboelectric nanogenerators (TENGs). The crystallographic match between the chitin and PVDF-TrFE enables the development of the intended crystal orientation, with the PVDF-TrFE polarization axis aligned perpendicular to the substrate. In addition, the epitaxially grown PVDF-TrFE on chitin not only enhances the performance of the TENG but also increases the stability of the hygroscopic chitin film against water. The corresponding TENG exhibits a significantly higher output current compared to that of a nonepitaxial PVDF-TrFE/chitin film. Furthermore, the triboelectric sensors based on epitaxial PVDF-TrFE/chitin films allow the monitoring of subtle pressures, suggesting that tailoring the crystal orientation of PVDF-TrFE is a promising approach for developing high-performance TENGs.
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