研究目的
Investigating the influence of imidazole on the poly (vinylidene fluoride) (PVDF)- poly (methyl methacrylate) (PMMA)-Ethylene carbonate (EC)-KI-I2 polymer blend electrolytes for dye-sensitized solar cells (DSSC) in energy harvesting window glass applications.
研究成果
The quasi-solid-state polymer blend electrolyte with 40 wt% of imidazole content demonstrated the highest ionic conductivity and photo-conversion efficiency for DSSC applications. The study highlights the potential of imidazole-based polymer electrolytes in enhancing the performance and stability of DSSCs for energy harvesting window glass applications.
研究不足
The study is limited by the solubility of imidazole in the polymer blend system at higher concentrations, which affects the ionic conductivity and overall performance of the DSSC. The long-term stability of the DSSC device was only tested over a period of 10 days.
1：Experimental Design and Method Selection:
The study involved preparing polymer blend electrolytes with various weight percentages of imidazole by solution casting technique. The films were characterized using FTIR, XRD, TGA, UV-visible spectra, photoluminescence spectra, and impedance spectroscopy. AFM was used to analyze surface roughness.
2：Sample Selection and Data Sources:
The materials used included PVDF, PMMA, EC, KI, I2, and imidazole, dissolved in DMF solvent. The films were prepared by evaporating the solvent at room temperature.
3：List of Experimental Equipment and Materials:
FTIR spectrometer (Perkin Elmer Spectrum Version 10.03.09), XRD (PANalytical X’Pert PRO), TGA (TGA instruments model 4000 Perkin Elmer), UV-Vis spectrophotometer (Shimadzu Model UV-1601), electrochemical analyzer (CH Instrument, TX, USA), AFM (Park XE-70 Model).
4：09), XRD (PANalytical X’Pert PRO), TGA (TGA instruments model 4000 Perkin Elmer), UV-Vis spectrophotometer (Shimadzu Model UV-1601), electrochemical analyzer (CH Instrument, TX, USA), AFM (Park XE-70 Model).
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The polymer blend electrolytes were prepared by dissolving the components in DMF, stirring, and casting into films. The DSSC was fabricated using TiO2 paste, N 719 dye, and platinum paste, with the electrolyte introduced between the photoanode and counter electrode.
5：Data Analysis Methods:
The ionic conductivity was calculated using impedance spectroscopy. The photovoltaic performance was evaluated using current density-voltage (J-V) curves under illumination.
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