Abstract
We describe a method of fabricating ferroelectric beta-type poly(vinylidene fluoride) (PVDF) thin films on Au substrate by the humidity controlled spin casting combined with rapid thermal treatment. Our method produces thin uniform ferroelectric PVDF film with ordered beta crystals consisting of characteristic needlelike microdomains. A capacitor with a 160nm thick ferroelectric PVDF film exhibits the remanent polarization and coercive voltage of ∼7.0μC∕cm2 and 8V, respectively, with the temperature stability of up to 160°C. A ferroelectric field effect transistor also shows a drain current bistablility of 100 at zero gate voltage with ±20V gate voltage sweep.
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