Abstract
The present work reports on solvent free quasi-solid state polymer electrolyte comprising of polyethyleneimine, polyethylene glycol, KI, I2 with newly synthesized N,O,S based organic compounds and application for nanocrystalline dye-sensitized solar cell (DSSC). The synthesized compounds was confirmed by NMR and mass spectra the conductivity and the surface study were analysed by FTIR spectra, impedance spectra, CV, microscope image, UV and XRD. The performance of the fabricated solar cell and conductivity of polymer electrolyte was enhanced by the electron donicity of hetero atom in the synthesized organic compound such as tetraethylene glycol and OCCO units. Among all synthesized organic compound, the (4,4′-((((oxybis(ethane-2,1-diyl))bis(oxy))bis(ethane-2,1diyl))bis(sulfanediyl))dipyridine) dopant (I) showed a strong interaction with nano TiO2 electrode, redox couple and the electrolyte resulted with short circuit current (Jsc), open-circuit voltage (Voc), fill factor (ff) and energy conversion (ŋ) values of about 12.9, 890, 0.56 and 9.2% under the sunlight irradiation of 70 mW/cm2.
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