On the origin of enhanced power output in ferroelectric polymer-based triboelectric nanogenerators: Role of dipole charge versus piezoelectric charge

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dc.contributor.authorJeong, Dong Geunko
dc.contributor.authorKo, Young Joonko
dc.contributor.authorKim, Jong Hunko
dc.contributor.authorKong, Dae Solko
dc.contributor.authorHu, Ying Chiehko
dc.contributor.authorLee, Dong Wooko
dc.contributor.authorIm, Seong Hyunko
dc.contributor.authorLee, Jeongwanko
dc.contributor.authorKim, Mi Sukko
dc.contributor.authorLee, Gwan-Hyoungko
dc.contributor.authorAhn, Chang Wonko
dc.contributor.authorAhn, Joung Realko
dc.contributor.authorLee, Minbaekko
dc.contributor.authorPark, Jeong Youngko
dc.contributor.authorJung, Jong Hoonko
dc.identifier.citationNANO ENERGY, v.103-
dc.description.abstractWhile ferroelectric polymer-based triboelectric nanogenerators (FE-TENGs) have been regarded as one of the most efficient mechanical energy harvesting devices, their fundamental mechanism is still debated. Here, we propose a dipole charge-shifted work function as the main origin of enhanced performance rather than a piezoelectric charge-increased electrostatic induction. P(VDF-TrFE) FE polymers were contacted with and separated from an ITO metal electrode and another P(VDF-TrFE) FE polymer under the variation of poling voltage, pressure, and temperature. The power outputs of the ITO-P(VDF-TrFE) and P(VDF-TrFE)-P(VDF-TrFE) FE-TENGs increased with poling voltage and pressure, but decreased with temperature; these behaviors are consistent with that of dipole charge rather than piezoelectric charge. Surface-sensitive spectroscopy and microscopy investigations suggested that electrons should be transferred, depending on the dipole direction, in the ITO-P(VDF-TrFE), whereas electrons and material should be transferred, depending on Young's modulus, in the P (VDF-TrFE)-P(VDF-TrFE). The dipole- and piezoelectric charge-induced electric field plays a crucial role in the overlapped electron cloud model for the triboelectrification of FE-TENGs.-
dc.titleOn the origin of enhanced power output in ferroelectric polymer-based triboelectric nanogenerators: Role of dipole charge versus piezoelectric charge-
dc.citation.publicationnameNANO ENERGY-
dc.contributor.localauthorPark, Jeong Young-
dc.contributor.nonIdAuthorJeong, Dong Geun-
dc.contributor.nonIdAuthorKo, Young Joon-
dc.contributor.nonIdAuthorKim, Jong Hun-
dc.contributor.nonIdAuthorKong, Dae Sol-
dc.contributor.nonIdAuthorHu, Ying Chieh-
dc.contributor.nonIdAuthorLee, Dong Woo-
dc.contributor.nonIdAuthorIm, Seong Hyun-
dc.contributor.nonIdAuthorLee, Jeongwan-
dc.contributor.nonIdAuthorKim, Mi Suk-
dc.contributor.nonIdAuthorLee, Gwan-Hyoung-
dc.contributor.nonIdAuthorAhn, Chang Won-
dc.contributor.nonIdAuthorAhn, Joung Real-
dc.contributor.nonIdAuthorLee, Minbaek-
dc.contributor.nonIdAuthorJung, Jong Hoon-
dc.subject.keywordAuthorFerroelectric polymer-
dc.subject.keywordAuthorTriboelectric nanogenerator-
dc.subject.keywordAuthorHigh power generation-
dc.subject.keywordAuthorDipole charge-
dc.subject.keywordAuthorPiezoelectric charge-
dc.subject.keywordAuthorOrigin of triboelectrification-
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