Abstract
PVDF has been popularly used for miscellaneous sensor and energy harvesting purposes. The advantages of flexible and light characteristics in particular enhance more interest. A new approach of using ITO glass for surface poling is investigated in this study. Instead of using metal electrode onto the PVDF surface, ITO is coated onto glass for conducting electrode. It can provide an easy way of electrode pattern design. Also, higher electric field can be applied in the process of poling so that higher response is achieved. Properties of PVDF films are characterized by using d31 meter to measure the piezoelectric constant and using Fourier Transformed Infrared Spectroscopy (FTIR) and Differential Scanning Calorimeter (DSC) to measure β-crystallization. From the experiment results, it indicates that PVDF film makes use of the ITO glass poling method will gain higher output voltage and current as compared to traditional poling technique. Comb type electrode pattern, for example, is efficient to generate higher output response for planar polarization and is able to control the desired output voltage and current. Using a whole piece of ITO glass for poling with pattern design can avoid from the defect of non-uniform polarization at the corners that usually happens in using metal electrode. Compared to the PVDF embedded in a cantilever and a pressing structure, the latter one will gain more output response.
Published Version
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