Ferroelectric polymers
نویسندگان
چکیده
منابع مشابه
Adsorbate/absorbate interactions with organic ferroelectric polymers
We discuss the interactions of adsorbates with the organic ferroelectric copolymer poly(vinylidene fluoride (PVDF)–trifluoroethylene (TrFE)). Range of molecular adsorbates is discussed from the smaller polar molecules like water, which is small enough to both adsorb and absorb, to the larger macrocyclic metal–organic metal phthalocyanines. The changes in local dipole orientation may affect the ...
متن کاملAdvanced Ferroelectric and Related Electromechanical Polymers
This talk will cover two classes of electroactive polymers under development recent at Penn State. One is the modified poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) polymer and the other is the high dielectric constant all-organic composite. Recently, making use of the defect structure modification in P(VDF-TrFE) based polymers, we converted normal ferroelectric P(VDF-TrFE) into rel...
متن کاملHigh frequency dielectric relaxation in polymers filled with ferroelectric ceramics
We investigated the dielectric relaxation process in high-dielectric constant polymer composite films filled with barium titanate particles. In order to extend the dielectric measurements to the microwave range, we employed a new broadband measurement technique where a thin film capacitance terminating a coaxial waveguide is treated as a transmission line. The complex permittivity, measured at ...
متن کاملEfficiency enhancement in organic solar cells with ferroelectric polymers.
The recombination of electrons and holes in semiconducting polymer-fullerene blends has been identified as a main cause of energy loss in organic photovoltaic devices. Generally, an external bias voltage is required to efficiently separate the electrons and holes and thus prevent their recombination. Here we show that a large, permanent, internal electric field can be ensured by incorporating a...
متن کاملFerroelectric polarization induces electronic nonlinearity in ion-doped conducting polymers
Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) is an organic mixed ion-electron conducting polymer. The PEDOT phase transports holes and is redox-active, whereas the PSS phase transports ions. When PEDOT is redox-switched between its semiconducting and conducting state, the electronic and optical properties of its bulk are controlled. Therefore, it is appealing to use this t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Advances in Physics
سال: 1992
ISSN: 0001-8732,1460-6976
DOI: 10.1080/00018739200101463