Piezoelectric and Dielectric Properties of PZT-Epoxy Composite Thick Films-Juniper Publishers
JUNIPER PUBLISHERS- ACADEMIC JOURNAL OF POLYMER SCIENCE Abstract Composite piezoelectric thick films are envisioned for energy harvesting, energy storage, and advanced sensor applications. This work focuses on PZT-epoxy-aluminum thick films that were fabricated using a two-step spin coat deposition and annealing method. The volume fraction of the PZT filler ranged from 0.2 to 0.4, and the aluminum volume fraction was varied from 0.10 to 0.17 for each PZT volume fraction, respectively to ascertain the percolation range of the devices and the influence of the aluminum on the device piezoelectric and dielectric properties. An aluminum filler was included in the PZT-epoxy composite to enhance the polarization process of the composite and to enhance the dielectric properties of the composite. The piezoelectric strain coefficients d 33 and d 31 , and capacitance were measured and studied as a function of aluminum volume fraction and top electrode material (silver and g...