Synthesis of a novel alkylimidazolium iodide containing an amide group for electrolyte of dye-sensitized solar cells
2010
Abstract A novel alkylimidazolium iodide containing an amide group, 1-(2-hexanamidoethyl)-3-methylimidazol-3-ium iodide (amido-ImI), was synthesized to act as the quasi-solid-state electrolyte of dye-sensitized solar cells (DSSCs). The DSSC with the amido-ImI electrolyte exhibited short-circuit photocurrent density ( J sc ) and overall energy conversion efficiency ( η ) that were improved by 7.2% and 10.2%, respectively, compared to those obtained with the cell containing 1-hexyl-2,3-dimethylimidazolium iodide, a commonly used liquid electrolyte, at 100 mW cm −2 . Furthermore, the stability of the DSSC was enhanced by the presence of amido-ImI.
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