Dye-sensitized nanocrystalline solar cells incorporating ethylmethylimidazolium-based ionic liquid electrolytes

Dai, Qing, Menzies, David B., MacFarlane, Douglas R., Batten, Stuart R., Forsyth, Stewart, Spiccia, Leone, Cheng, Yi-Bing and Forsyth, Maria 2006, Dye-sensitized nanocrystalline solar cells incorporating ethylmethylimidazolium-based ionic liquid electrolytes, Comptes rendus chimie, vol. 9, no. 5-6, pp. 617-621.

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Title Dye-sensitized nanocrystalline solar cells incorporating ethylmethylimidazolium-based ionic liquid electrolytes
Author(s) Dai, Qing
Menzies, David B.
MacFarlane, Douglas R.
Batten, Stuart R.
Forsyth, Stewart
Spiccia, Leone
Cheng, Yi-Bing
Forsyth, Maria
Journal name Comptes rendus chimie
Volume number 9
Issue number 5-6
Start page 617
End page 621
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2006-05
ISSN 1631-0748
1878-1543
Keyword(s) ionic liquids
dye-sensitized solar cells
electrolyte
viscosity
conductivity
electrochemical windows
Summary High-performance dye-sensitized solar cells incorporating electrochemically stable non-volatile electrolytes are especially desirable devices. In particular, ionic liquid systems based on ethylmethylimidazolium dicyanamide seem to be promising for this purpose. These have triggered our interest in the properties of further ethylmethylimidazolium-based ionic liquids with anions which are close relatives of dicyanamide. In this study, the effect of three different anions, tricyanomethanide, dicyanamide and thiocyanate, on the performance of dye-sensitized solar cells have been investigated. Both the short circuit photocurrent and conversion efficiency are increased with decreasing viscosity of the ionic liquids under comparable conditions. A conversion efficiency of 2.1% at 30% light intensity was observed for the cell containing the tricyanomethanide salt, which has lowest viscosity among the three ionic liquids, while efficiencies of 0.7% and 1.7% at the same light intensity were observed in the case of dicyanamide and thiocyanate salts, respectively, as an electrolyte.
Language eng
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2005, Académie des sciences
Persistent URL http://hdl.handle.net/10536/DRO/DU:30030096

Document type: Journal Article
Collection: Institute for Technology Research and Innovation
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