4.6 Article

Shear stress-induced enhancement of the piezoelectric properties of PVDF-TrFE thin films

Journal

ORGANIC ELECTRONICS
Volume 28, Issue -, Pages 67-72

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2015.10.018

Keywords

Organic polymer; Ferroelectric and piezoelectric polymer; Spin coating; Shear stress; Surface potential; SLLOD molecular dynamics simulation

Funding

  1. Global Frontier Program through the Global Frontier Hybrid Interface Materials (GFHIM) of the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning
  2. Grand Challenge Program [2013-C3-051]

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Material properties of PvDF-TrFE related to dipole alignment and crystallinity, such as surface potential, polarization direction, piezoelectric coefficient, and remnant polarization, have been systematically examined to explain the improvement in the piezoelectric properties of PVDF-TrFE formed at a high spin-coating speed. The correlations between the distribution of the dipole moment vector and the degree of crystallinity were studied as a function of strain rate using a computational molecular dynamic simulation. (C) 2015 Elsevier B.V. All rights reserved.

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