Abstract
Nanofibers were prepared from a poly(acrylonitrile-co-vinyl acetate) [P(AN-co-VAC)]/polyvinylidene fluoride (PVDF) blend and used as a quasi-solid (QS) electrolyte for dye-sensitized solar cells (DSSCs). The effects of preparation parameters such as the flow rate and the weight percentage of PVDF on the fiber diameter, crystallinity, and ionic conductivity were investigated. Fourier-transform infrared (FTIR) spectroscopy, x-ray diffraction (XRD) analysis, and scanning electron microscopy (SEM) were used to characterize the prepared blend nanofibers. Current–voltage and electrochemical impedance spectroscopy (EIS) measurements were carried out on the fabricated DSSCs. It was found that the optimum weight ratio of P(AN-co-VAC) to PVDF in N,N-dimethylformamide (DMF) to produce uniform fibers with average diameter of 180 nm was 7:3 with ionic conductivity (σi) of 2.9 × 10−3 S/cm. Moreover, the efficiency of DSSCs based on P(AN-co-VAC) as QS electrolyte was enhanced by 8.5 times by addition of PVDF. Finally, a model is proposed based on the EIS analysis.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.