In this paper, a comparison between PVDF and PVDF-TrFE films in terms of deposition conditions and their effect on the piezoelectric response is presented. Solutions of PVDF and PVDF-TrFE were prepared and deposited via spin-coating on different substrates. For the post-processing, special interest was taken to phase inversion at different temperatures. Other protocols, such as baking for removal of solvent and crystallinity enhancement were also considered. Different characterization techniques were used in order to determine piezoelectric response of the manufactured samples. Values as high as 5 pm/V were obtained.
G. Gutiérrez-Sánchez, J. Hernando-García, Victor Ruiz-Diez, O. J. Dura, M. A. López de la Torre, and J. L. Sánchez-Rojas, "Comparative assessment of PVDF and PVDF-TrFE piezoelectric polymers for flexible actuators applications," Proc. SPIE 10246, Smart Sensors, Actuators, and MEMS VIII, 102460N (Presented at SPIE Microtechnologies: May 09, 2017; Published: 31 May 2017); https://doi.org/10.1117/12.2266559.
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