PVDF‐HFP/Zinc Based Perovskite Nanocomposite for Optoelectronics and Kinematic Movement Monitoring PENG

ABSTRACT With demand for sustainable and next‐generation energy technologies, piezoelectric nanogenerators have attracted increasing attention. This study aims to synthesize dual‐phase Cs ₂ ZnCl ₄ @Cs ₃ ZnCl ₅ perovskite nanoparticles (CZC NPs) and incorporate them into Polyvinylidene fluoride‐co‐hexafluoropropylene (PVDF‐HFP) polymer by varying their concentration. The crystallinity and morphology of CZC NPs are examined using an X‐ray Diffractometer (XRD) and Transmission Electron Microscope (TEM), respectively. The successful incorporation of CZC NPs into PVDF‐HFP polymer matrix is confirmed using Scanning Electron Microscopy (SEM) and XRD, and the interaction between them is verified by Fourier Transform Infrared Spectroscopy (FTIR). The melt properties, topography of CZC/PVDF‐HFP are studied using Differential Scanning Calorimetry (DSC), Atomic Force Microscopy (AFM). The piezoelectric response and d ₃₃ values are verified using PFM. The incorporation of CZC within PVDF‐HFP shows an increase in β ‐phase fraction and d ₃₃ values. The UV–vis spectroscopy shows the polymer nanocomposite's ability to trap UV‐C radiation. The nanocomposites are fabricated as a PENG device, and their electrical output performance has shown remarkable results that can be used to harvest mechanical energy from human body movement. This work presents a new class of materials, designed for both sensitivity and piezoelectric properties, along with UV‐C blocking applications.