Abstract
Effects of surface roughness as well as crystallinity onto functionalities of crystalline copolymer films were studied using a dipping method to inject the crystalline grains into voids among crystalline nano-rods. Differently from a widely-used fabrication method such as spin-coating of solution, we achieved a smooth surface and high crystallinity in ferroelectric P(VDF-TrFE) films, simultaneously. Varying dipping temperature and time, remnant polarization and relative dielectric constant values increased by 20% and 75% with a decrease of surface roughness from 20nm to 7nm in root mean square value, respectively. The ferroelectric stabilities of P(VDF-TrFE) film capacitors were found to be strongly dependent on the crystallinity.
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