Preparation of PVDF TrFE based electrospun nanofibers decorated with PEDOT CNT/rGO composites for piezo electric pressure sensor
We developed a high performance electrically conductive and transparent PVDF TrFE based electrode for piezoelectric pressures sensor using the electrospinning technique. The electrode was produced by depositing the reduced graphene oxide (rGO) multiwall carbon nanotubes (rGO MCNTs) via spray coating. Various concentration of rGO and MCNTs were used and optimized for improved electrical performance of the resultant electrode. The deposition of poly (3,4 ethylenedioxythiophene) (PEDOT) was successfully achieved by using vapor phase polymerization (VPP) The morphological characteristics of the as prepared hybrid composite nanofiber mats were analyzed by using field emission scanning electron microscopy (FESEM) transmission electron microscopy (TEM) Fourier transforms infrared spectroscopy (FT IR) Raman spectroscopy, X ray diffraction (X RD) and UV visible spectroscopy. The electrical performance of the fabricated composite nanofibers was measured by using a four point probe device. The results showed significant enhancement in electrical conductivity of the hybrid nanocomposite which increased up to 3916 S cm 1 and sensitivity of the developed pressure sensor was achieved 67.4 kPa 1. This work suggests that the hybrid nanocomposite can be used for the transparent electrodes in a piezoelectric pressure sensor.
Journal of Materials Science: Materials in Electronics