Ionic liquid electrolytes based on 1-vinyl-3-alkylimidazolium iodides for dye-sensitized solar cells |
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| Authors: | Yuqiao Wang Yueming Sun Bo Song Junting Xi |
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| Affiliation: | aSchool of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China;bOrdered Matter Science Research Center, Southeast University, Nanjing 211189, China |
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| Abstract: | Five new ionic liquids of 1-vinyl-3-alkylimidazolium iodide were synthesized to develop novel electrolytes for dye-sensitized solar cells. The effects of photovoltaic characteristics of the cell and the ionic liquid features such as viscosity and ionic conductivity were described. The 1-vinyl-3-alkylimidazolium cation volume was calculated by quantum chemistry method. The linear dependence of photon-to-current conversion efficiency on the non-solvated cation volume was revealed. After lithium iodide was added to 1-vinyl-3-alkylimidazolium salts as electrolytes, except the photovoltage, the photocurrent, fill factor and photon-to-current efficiency were improved correspondingly. |
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| Keywords: | Dye-sensitized solar cell Ionic liquids 1-Vinyl-3-alkylimidazolium iodide Electrolyte |
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