The effect of Ag2O/NbO2 nanostructures on the dielectric characteristics of PVA/PVP bled used in electronics

Abstract

Nanocomposites may be employed in a wide range of applications, including as biosensors, diodes, antibacterial, transistors, and so on. In the current study, a new type of nanocomposites (PVA-PVP-Ag2O-NbO2) were prepared by solution casting method. The polymeric mixture (polyvinyl alcohol-polyvinylpyrrolidone) was produced with various polyvinyl alcohol concentration (50 wt. %), polyvinylpyrrolidone (50% wt.%), as well as niobium oxides and silver nanoparticles oxides were added to the polymeric mixture with different percentages, which are (0.0025, 0.005, 0.0075 and 0.01 wt. percent). The effect of each of the niobium oxide nanoparticles and silver oxide nanoparticles on A.C was studied. The alternating electrical properties were studied at room temperature in the frequency range (100Hz-5MHz). Results of the experiment showed an increase of both the dielectric constant and the alternating conductivity of electricity and the loss of dielectric of polymeric mixture (PVA-PVP) an increase in increasing concentrations of niobium oxide nanoparticles and silver oxide nanoparticles, and the dielectric loss and dielectric constant of nanocomposites (PVA-PVP-Ag2O-NbO2) a rise in increasing in the applied electric field’s frequency, and alternating With increasing frequency, electrical conductivity increases.