Quasi-solid-state Electrolyte for Dye Sensitized Solar Cells Based on Nanofiber PMA-PVDF and PMA-PVDF / PEG Membranes

摘要

Novel electrospun membranes quasi-solid electrolytes based on blends of polymethylacrylate (PMA) -polyvinylidene fluoride (PVDF), and PMA-PVDF/PEG (polyethylene glycol) are prepared byelectrospinning technique and applied as quasi-solid state electrolytes in dye sensitized solar cells(DSSCs). The membranes are characterized by Fourier transform infrared (FT-IR) spectrophotometer,differential scanning calorimeter (DSC), Scanning electron microscopy (SEM), and Electrochemicalimpedance spectroscopy. The crystallinity obtained from the DSC data increased with the increase ofPVDF wt% in PMA-PVDF blend and then decreased for the PMA-PVDF/PEG membranes. The fullyinterconnected porous structure of the host polymer membranes of PMA-PVDF (4:6 wt%) exhibited a high electrolyte uptake reached to ~ 265% and an ionic conductivity of 2.110 S cm , which is-3 increased to 406.3%, and 3.2 10 S cm , respectively for PMA-PVDF/PEG (4:6:4 wt%) membrane.DSSC is assembled by PMA-PVDF(4:6 wt%) and attained an overall energy conversion efficiency of-2 6.6% at light intensity of 100 mW cm . The presence of 4 w% PEG in the electrolyte membraneincreased the energy conversion efficiency to 7 % giving a promise candidate for scaling up this typeof DSSCs.