ETRI Journal

Electronics and Telecommunications Research Institute (한국전자통신연구원)
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A New Ionic Liquid for a Redox Electrolyte of Dye-Sensitized Solar Cells

  • Received : 2003.12.29
  • Published : 2004.12.31
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Abstract

A new ionic liquid, 1-vinyl-3-heptylimidazolium iodide (VHpII), was synthesized and applied as a redox electrolyte for dye-sensitized solar cells. The chemical structure of the synthesized VHpII was confirmed using $^1H$ NMR. Thermogravimetric analysis showed that the VHpII was stable for thermal stress of up to $250^{\circ}C$. The energy conversion efficiencies of the VHpII-based dye-sensitized solar cells were investigated in terms of the effect of a lithium iodide addition. A solar cell containing the redox couple of VHpII and iodine showed a conversion efficiency of 2.63% under 1 sun light intensity at AM 1.5. Adding 0.4 M LiI results in a conversion efficiency of 3.63%, which was an improvement of about 40%. The increased conversion efficiency was ascribed to an increase in external quantum efficiency.

Keywords

References

  1. Nature v.353 A Lost-Cost, High-Efficiency Solar Cell Based on Dye-Sensitized Colloidal $TiO_2$ Films O’Regan, B.;Gratzel, M.
  2. Sol. Energy Mater. Sol. Cells v.69 no.2 Dye-Sensitized Solar Cell with the Hole Collector p-CuSCN Deposited from a Solution in n-Propyl Sulphide Kumara, G.R.R.A.;Konno, A.;Senadeera, G.K.R.;Jayaweera, P.V.V.;Silva, D.B.R.A.;Tennakone, K.
  3. Adv. Mater. v.12 no.17 Electrodeposited Nanocomposite n-p Heterojunctions for Solid-State Dye-Sensitized Photovoltaics O'Regan, B.;Schwartz, D.T.;Zakeeruddin, S.M.;Gratzel, M.
  4. Appl. Phys. Lett. v.79 no.13 High Efficiency Solid-State Photovoltaic Device due to Inhibition of Interface Charge Recombination Kruger, J.;Plass, R.;Cevey, L.;Piccirelli, M.;Gratzel, M.;Bach, U.
  5. Sol. Energy Mater. Sol. Cells v.55 Fabrication of Solid-State Dye-Sensitized $TiO_2$ Solar Cells Combined with Polypyrrole Murakoshi, K.;Kogure, R.;Wada, Y.;Yanagida, S.
  6. Adv. Mater. v.12 no.17 Electron Trapping in Dye/Polymer Blend Photovoltaic Cells Dittmer, J.J.;Marseglia, E.A.;Friend, R.H.
  7. Adv. Mater. v.12 no.22 Efficient Titanium Oxide/Conjugated Polymer Photovoltaics for Solar Energy Conversion Arango, A.C.;Johnson, L.R.;Bliznyuk, V.N.;Schlesinger, Z.;Carter, S.A.;Horhold, H.H.
  8. J. Phys. Chem. B v.105 no.51 Quasi-Solid-State Dye-Sensitized $TiO_2$ Solar Cells: Effective Charge Transport in Mesoporous Space Filled with Gel Electrolytes Containing Iodide and Iodine Kubo, W.;Murakoshi, K.;Kitamura, T.;Yoshida, S.;Haruki, M.;Hanabusa, K.;Shirai, H.;Wada, Y.;Yanagida, S.
  9. Adv. Mater. v.14 no.5 A High Performance Solid-State Dye-Sensitized Photoelectrochemical Cell Employing a Nanocomposite Gel Electrolyte Made by the Sol-Gel Route Stathatos, E.;Lianos, P.;Lavrencic-Stangar, U.;Orel, B.
  10. Chem. Comm. v.2003 no.13 Quasi-Solid Dye Sensitised Solar Cells Filled with Phase-Separated Chemically Cross-Linked Ionic Gels Murai, S.;Mikoshiba, S.;Sumino, H.;Kato, T.;Hayase, S.
  11. Chem. Comm. v.2002 no.24 High Efficiency Dye-Sensitized Nanocrystalline Solar Cells Based on Ionic Liquid Polymer Gel Electrolyte Wang, P.;Zakeeruddin, S.M.;Exnar, I.;Gratzel, M.
  12. Chem. Comm. v.2002 no.4 Quasi-Solid-State Dye-Sensitized Solar Cells Using Room Temperature Molten Salts and a Low Molecular Weight Gelator Kubo, W.;Kitamura, T.;Hanabusa, K.;Wada, Y.;Yanagida, S.
  13. J. Electrochem. Soc. v.151 no.7 Dye-Sensitized Solar Cells Using Polymer Gel Electrolytes Based on Poly(Vinylidene Fluoride-Co-Hexafluoropropylene) Kang, M.G..;Park, N.G.;Kim, K.M.;Ryu, K.S.;Chang, S.H.;Hong, J.S.;Kang, K.J.
  14. J. Electrochem. Soc. v.98 Hurley, F.H.;Wier, T.P.
  15. J. Chem. Soc., Chem. Commun. Air and Water Stable 1-Ethyl-3-Methylimidazlium Based Ionic Liquids Wilkes, J.S.;Zaworotko, M.J.
  16. Inorg. Chem. v.35 no.5 Hydrophobic, Highly Conductive Ambient-Temperature Molten Salts Bonhote, P.;Dias, A.P.;Papageorgiou, N.;Kalyanasundaram, K.;Gratzel, M.
  17. J. Electrochem. Soc. v.143 no.10 The Performance and Stability of Ambient Temperature Molten Salts for Solar Cell Applications Papageorgiou, N.;Athanassov, Y.;Armand, M.;Bonhote, P.;Pettersson, H.;Azam, A.;Gratzel, M.
  18. Chem. Lett. v.30 no.1 The Application of Room Temperature Molten Salt with Low Viscosity to the Electrolyte for Dye-Sensitized Solar Cell Matsumoto, H.;Matsuda, T.;Tsuda, T.;Hagiwara, R.;Ito, Y.;Miyazaki, Y.
  19. Electrochim. Acta v.46 no.10 Molten Salt Type Polymer Electrolytes Ohno, H.
  20. Bull. Korean Chem. Soc. v.21 no.10 Effect of Cations on the Open-Circuit Photovoltage and the Charge-Injection Efficiency of Dye-Sensitized Nanocrystalline Rutile $TiO_2$ Films Park, N.G.;Chang, S.H.;van de Lagemaat, J.;Kim, K.J.;Frank, A.J.
  21. J. Am. Chem. Soc. v.115 no.14 Conversion of Light to Electricity by $Cis-X_2bis(2,2'-Bipyridyl-4,4'-Dicarboxylate)ruthenium(II)$ Charge-Transfer $Sensitizers(X=Cl^-,\;Br^-,\;I^-,\;CN^-,\;and\;SCN^-)$ on Nanocrystalline Titanium Dioxide Electrodes Mazeerudin, M.K.;Kay, A.;Rodicio, I.;Humphry-Baker, R.;Muller, E.;Liska, P.;Vlachopoulos, N.;Gratzel, M.
  22. J. Phys. Chem. B v.101 no.14 Charge Recombination in Dye-Sensitized Nanocrystalline $TiO_2$ Solar Cells Huang, S.Y.;Schlichthorl, G.;Nozik, A.J.;Gratzel, M.;Frank, A.J.