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Influence of Ionic Liquids Bearing Functional Groups in Dye-Sensitized Solar Cells

Influence of Ionic Liquids Bearing Functional Groups in Dye-Sensitized Solar Cells

Fellicien Mazille, Zhaofu Fei, Daibin Kuang, Dongbin Zhao, Shaik M Zakeeruddin, Michael Grätzel, Paul J Dyson

Inorg Chem. 2006 Feb 20;45(4):1585-90.

PMID: 16471969

Abstract:

Ionic liquids containing the nitrile and vinyl functional groups attached to imidazolium cations combined with various anions, e.g., iodide, bis[(trifluoromethyl)sulfonyl]imide ([TFSI]-), or dicyanamide ([N(CN)2]-), have been prepared and characterized. These ionic liquids have been successfully used as electrolytes for dye-sensitized solar cells based on nanocrystalline TiO2 with the amphiphilic ruthenium sensitizer [ruthenium (4,4'-dicarboxylic acid-2,2'-bipyridine)(4,4'-bis(p-hexyloxystyryl)-2,2'-bipyridine)][NCS]2 (coded K-19). The iodide salt was used in 3-methoxypropionitrile-based electrolytes, and the performances of both types of devices were evaluated on the basis of their photocurrent density-voltage characteristics and dark current measurements, demonstrating that the functional groups do not exert a detrimental effect on the performance. The solid-state structure of the nitrile-functionalized salt [C1C3CN(im)]I has also been established by single-crystal X-ray diffraction, revealing extensive hydrogen bonding between the cation protons and the iodide.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP847665456	K19 Dye		847665-45-6	Price

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