In situ synthesized electroactive and large dielectric BaF2/PVDF nanocomposite film for superior and highly durable self-charged hybrid photo-power cell

In present work, a simplistic, efficient and highly durable electroactive and high dielectric BaF2 nanoparticles (NPs) incorporated polyvinylidene fluoride (PVDF) thin film based Self-Charged Hybrid Photo-Power Cell (HPPC) has been designed which is able to self-charge under visible light illumination. The incorporation of NPs into the PVDF matrix has effectively enhanced the polar beta crystallite nucleation (similar to 96%) and the dielectric value (similar to 2570) of the PVDF thin film. A composite dye film of TiO2 NPs, phenosafranine-polyvinyl pyrrolidone in the presence of H3PO4 is acted as the light absorbing and photoelectrons generating part in the HPPC. The photoelectrons are stored in the energy storage part made of the in situ synthesized BaF2 NPs embedded PVDF thin film. Our HPPC is able to generate a photovoltage similar to 1.3 V within 65 s under exposure of visible light (110 mW/cm(2)) with superior energy storage efficiency similar to 79%. The device has the ability of storing charge similar to 1200 F/m(2) with power density 18.7 W/m(2) and charge density 1500 C/m(2). Our light weighted self-charged power bank may be utilized as power supplier in portable electronic appliances.