article · Optical and Quantum Electronics
Polyvinylidene fluoride polymer membranes can be modified with two-dimensional zinc oxide nanosheets and reduced graphene oxide using a straightforward solution casting method. This dual incorporation is designed to enhance the proportion of the electronically favoured beta phase within the hybrid materials. A combination of experimental techniques, including Rietveld refinement X-ray diffraction, Fourier-transform infrared spectroscopy, and scanning electron microscopy, was paired with density-functional theory calculations to explore structural and electronic transformations. These analyses reveal the atomic-level mechanisms responsible for negative piezoelectricity, alongside increases in total dipole moment, electrostatic potential, and bandgap energy in the hybrid membranes. These performance shifts originate from the significant displacive instability of the two-dimensional materials linked to their reduced lattice dimensionality.
Understanding how nanoscale additives alter the crystal structure and electronic properties of polymers is essential for designing high-performance functional materials. By clarifying how zinc oxide nanosheets and reduced graphene oxide modify the crystal phases and piezoelectric behaviour of polyvinylidene fluoride, this research provides foundational insight into the atomic-level interactions that govern electronic properties in hybrid polymer systems.
The abstract does not indicate an application pathway or commercial end users, describing early-stage laboratory research into material structure and electronic properties.
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Abstract Synergistic doping of 2-D Material ZnO nanosheets and reduced graphene oxide (rGO) of Polyvinylidene fluoride (PVDF), PVDF/ZnO, and PVDF/ZnO/rGO Hybrid membranes simply by solution casting technique for raising electronically favored β-phase ratio. Rietveld refinement X-ray diffraction technique, FTIR, Microscopic investigation, SEM, and density-functional theory (DFT) calculations were employed to unravel the atomistic origin of negative piezoelectricity, and increasing reasons for total dipole moment, electrostatic potential and bandgap energy of PVDF hybrid membranes, which arises from the sizeable displacive instability of two-dimensional material coupled with its reduced lattice dimensionality.
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DOI: 10.1007/s11082-023-04663-6
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