Abstract
We investigated the polarization enhancement in 60-nm-thick vinylidene fluoride/trifluoroethylene (VDF/TrFE) films without thermal annealing by applying repeated bipolar electric pulses. The remnant polarization was 8.4mC/m2 in as-spin-coated films and increased to up to 45mC/m 2 when 105 pulses were applied. Although the remnant polarization was half and the coercive field twice those of annealed films, the electrically treated film had a markedly smoother surface than the annealed film. Finally, a 15-nm-thick ferroelectric VDF/TrFE film with low conductivity was fabricated by electric treatment; annealed films with the same thickness experienced a severe short-circuit problem originating from the surface roughness.
Original language | English |
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Article number | 071501 |
Journal | Applied Physics Express |
Volume | 4 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2011 Jul 1 |
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)