Integrated ferroelectrics · 2013 · 51 citations · 23 references
Natural SciencesMaterials EngineeringMaterials ScienceMaterials ChemistryPolymer ChemistryThin FilmsPolymer CharacterizationPolymer CrystallinityPolymer Thin FilmsThin Film AnnealingThin Film Surface MorphologyThin-film MaterialsAnnealingAnnealing Temperature EffectsBlock Copolymer Thin FilmsCrystallization In Thin FilmsFilm MorphologyThin Film FerroelectricsThin-film MorphologyX-ray Diffraction Analysis
Ferroelectric poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] (70/30) copolymer thin films were prepared by spin-coating method. The microstructure and morphology of P(VDF-TrFE) thin films annealed at different temperatures (70°C-160°C) were investigated by atom force microscope and X-ray diffraction techniques, which reveal the crystallization of P(VDF-TrFE) films is greatly affected by the annealing temperature. With the increase of annealing temperature, the grains of P(VDF-TrFE) thin film change from small spheroids to long needle-like structures. The most rapid change occurs between 136°C–140°C. The surface roughness and the grain size of P(VDF-TrFE) film show similar change with the annealing temperature.
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