TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Method: The method comprises: depositing a second conductive electrode, which is optionally transparent, on the previously formed active layer; and using one or more polar and/or aromatic solvents capable of solubilizing the ferroelectric polymer and the semiconductive polymer. The preparation of the active layer is conducted so that a morphology of the cylinder-type semiconductive polymer is determined after evaporation of the solvent, with electrical contact of the semiconductive polymer phase and the material phase capable of crystallizing under ferroelectric form on the two electrodes and an angle of the cylinder axis of 20-90 degrees relative to plane of the electrodes. Preferred Components: The compositions of the active layer components are selected so that the proportion of the materials capable of crystallizing under ferroelectric form is greater than 20 mass% relative to the total material capable of crystallizing under ferroelectric form and semiconductive polymer. The material or materials capable of crystallizing under ferroelectric form is/are polarized by mechanical deformation and/or by applying an electric field greater than the coercive field, at the electrodes of the device. The device has a remanent polarization after the polarization of the material capable of crystallizing under ferroelectric form.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The semiconductive polymer is an organic material from the class of fluorenes, thiophenes, phenylenes, phenylene vinylidene, fullerenes, and/or pyrilenes. An electron donor of the semiconductive polymer is poly(3-hexylthiophene). The solvent or solvents is/are tetrahydrofuran, methyl ethyl ketone, dimethylformamide, N,N-dimethylacetamide, diethyl sulfoxide, acetone, methyl isobutyl ketone, cyclohexanone, diacetone alcohol, diisobutyl ketone, butyrolactone, isophorone, 1,2-dimethoxyethane, chloroform, and/or ortho-dichlorobenzene.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: One of the materials constituting the materials capable of crystallizing under ferroelectric form is a plasticizer. One of the materials capable of crystallizing under ferroelectric form is an organic material, preferably a polymeric material. The polymeric material consists of a polymer or mixture of polymers containing fluorine, such as a copolymer containing vinylidene fluoride, preferably a copolymer of poly(vinylidene fluoride-trifluoroethylene).