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Abstract
A novel thin composite film has been fabricated in which both phases are electroactive. Triglycine sulphate crystals (5μm in size), grown by rapid quenching and freeze drying of an aqueous solution, were mixed (10% w/w) with 70:30 vinylidene fluoride:trifluoroethylene copolymer in butanone. When spin cast, the material possessed a pyroelectric coefficient of (60±2)μCm−2K−1 and a figure of merit (pyroelectnc coefficient/√(relative permittivity x dielectric loss)) of 150μCm−2K−1, some 18% and 35% larger, respectively, than that of the pure copolymer.