Abstract
Polymer-based zinc oxide/titanium dioxide (ZnO/TiO
2
) nanocomposites flexible sheets with high dielectric permittivity and low loss factor have numerous applications in light emitting and energy storage devices. In this work, polymer-based ZnO/TiO
2
nanocomposites are synthesized by co-precipitation technique and their structural, morphological, elemental composition, dielectric and electrical properties are studied. The XRD analysis shows the development of diffraction planes related to TiO
2
and ZnO phases confirming the synthesis of polycrystalline polymer-based ZnO/TiO
2
nanocomposites. The crystallinity of various phases is associated with increasing ZnO nanofillers. The SEM analysis reveals the formation of nanoparticles of different shapes and dimensions associated with increasing amount of ZnO nanofillers. The EDX analysis confirms the presence of Zn, O and Ti in the synthesized nanocomposites. Dielectric measurements demonstrate the sharp increase in dielectric permittivity with relatively low dissipation factor of the nanocomposites. The observed AC conductivity of the nanocomposites at 3.0 × 10
5
and 1.0 × 10
6
Hz is ranged from 3.7–9.8 and 15.6–42.7 S/m respectively. The decreasing complex impedance and increasing electric modulus further confirm that the synthesized polymer-based ZnO/TiO
2
nanocomposites flexible sheets are the promising candidates for better capacitive performance showing high strength and flexibility.