Huge electrocaloric effect in Langmuir–Blodgett ferroelectric polymer thin films
In this work, we studied polyvinylidene fluoride (PVDF)-based ferroelectric copolymer and
terpolymer films grown, by the Langmuir–Blodgett (LB) technique, on polyimide substrates.
The LB technique is believed to improve the film quality, ie to confer better crystallinity and
less parasitic amorphous phase. As a consequence, a reversible adiabatic temperature
change ΔT up to 21 K is demonstrated. The large electrocaloric effects of LB films close to
room temperature suggest the potential for applying LB films in cooling systems.
terpolymer films grown, by the Langmuir–Blodgett (LB) technique, on polyimide substrates.
The LB technique is believed to improve the film quality, ie to confer better crystallinity and
less parasitic amorphous phase. As a consequence, a reversible adiabatic temperature
change ΔT up to 21 K is demonstrated. The large electrocaloric effects of LB films close to
room temperature suggest the potential for applying LB films in cooling systems.
Abstract
In this work, we studied polyvinylidene fluoride (PVDF)-based ferroelectric copolymer and terpolymer films grown, by the Langmuir–Blodgett (LB) technique, on polyimide substrates. The LB technique is believed to improve the film quality, ie to confer better crystallinity and less parasitic amorphous phase. As a consequence, a reversible adiabatic temperature change ΔT up to 21 K is demonstrated. The large electrocaloric effects of LB films close to room temperature suggest the potential for applying LB films in cooling systems.
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