Photo-Rechargeable Organic-Inorganic Dye-Integrated Polymeric Power Cell with Superior Performance and Durability

In the present work, we propose a simple and unique approach to design a lightweight, low-cost, self-charging power cell with considerable capacity to generate and store photocharges named self-charged photo-power cell (SCPPC). Initially, highly electroactive sodium dodecyl sulfate (SDS)-incorporated poly-(vinylidene fluoride) (PVDF) composite thin films with a large dielectric constant of similar to 525 are synthesized via a simplistic solution casting process. Then, the as-prepared high-dielectric SDS/PVDF thin film is used as a charge-storage medium in combination with an inorganic-organic dye film, i.e., ZnO nanoparticles-eosin Y-poly(vinylpyrrolidone) film, as a photoelectron generator in our SCPPC. An open-circuit voltage of similar to 1.2 V is attained after charging SCPPC under illumination light with intensity, similar to 110 mW/cm(2) and then discharging fully with a constant current density of similar to 4.5 mA/cm(2). A specific areal capacitance of similar to 450 F/m(2) is obtained with large energy and power densities of similar to 90 mVVh/m(2) and 54 W/m(2), respectively. The improved overall efficiency, similar to 3.78%, along with 89% storage efficiency leads to promising application possibilities of our rechargeable photo-power cell. The recyclability, i.e., rechargeability and storage durability, of the photo-power cell are also checked for 35 days without no such reduction in voltage generation and storage. Also, multicolored light-emitting diodes are lightened up using the photo-power cell as power source.