Enhanced pyroelectric properties of PZT/PVDF-TrFE composites using calcined PZT ceramic powders

Abstract

The effects of calcined lead–zirconate–titanate (PZT) powders on the electric properties of PZT/polyvinylidene-trifluorethylene copolymer (PVDF-TrFE) composites thick films were studied in this paper. Firstly, the PZT powders synthesized by hydrothermal method were calcined at different temperatures ranging from 300°C to 900°C, and then the PZT/PVDF-TrFE composites films were produced by casting PZT/PVDF-TrFE suspension onto the indium-tin-oxide (ITO)-coated glass substrates. Electric properties, including dielectric and pyroelectric performances of thick films consisting of PZT powders calcined at different temperatures were tested. The highest pyroelectric coefficient obtained in the sample using 700°C calcined PZT powders was 96 μCm-2K-1, which was 20% higher than the composites made of uncalcined powders. Additionally, the highest detectivity figure-of-merit (FOM) (F D ) of the composite was 1.36 × 10-5Pa-1/2, which increased about 13.5% compared to the one using uncalcined powders.

Piezoelectric fluorinated polymer composites: A review on coupling agents at the filler/matrix interface

“…The surface of ceramics can be activated by calcination. 118,131,139,140 Wu et al 141 studied the dielectric properties of 0-3 PZT/P(VDF-co-TrFE) composite after calcination of the PZT fillers at different temperatures. TEM images showed less aggregation and the presence of fewer cavities between the ceramic fillers and the fluorinated matrix for calcinated PZT.…”

Improved dielectric properties and energy-storage densities of BaTiO3-doped PVDF composites by heat treatment and surface modification of BaTiO3

“…Based on this approach, researchers have found that the dielectric properties of composites can be greatly enhanced by heat-treated ceramics doping [20]. For instance, calcined lead zirconate titanate (PZT) ceramics doping can improve the dielectric properties of composites [21]. Moreover, according to the research results from Schumacher et al [22], the permittivity of composites can be significantly improved through heat-treated barium titanate (BT) and poly (vinyl acetate-phenylethyl) dilute doping, which is 2.7 times larger than composites doping with BT without heat treatment.…”

SYNTHESIS, STRUCTURAL ANALYSIS AND INITIAL ELECTRIC SCRATCHING ON PbZrXTi(1-X)O3 PIEZOELECTRIC MATERIAL

“…From the synthesis results, the crystal structures were identified using the X-Ray Diffractometer (XRD) and analyzed using the Highscore program. The results of optimizing several polling parameters were applied to PZT piezoelectric composite materials with Polyvinylidene Fluoride (PVDF), as developed by Chuan Gui Wu [10]. The high voltage used in this study empowers Flyback TV.…”