Article ID Journal Published Year Pages File Type
79916 Solar Energy Materials and Solar Cells 2009 7 Pages PDF
Abstract

Dye-sensitised solar cells (DSSC) based on commercial nanostructured zinc oxide combined with imidazolium-based room temperature ionic-liquid electrolytes are characterized. The electrolytes are based on a binary mixture of two ionic liquids, one of them used as source of iodide ions. The composition of this solvent-free electrolyte is optimized with respect to the concentration of iodine and iodide and the effect of additives such as lithium and tert-butylpyridine (TBP) on the photovoltaic performance and the recombination rate is analyzed and discussed. A maximum photoconversion efficiency of 3.4% at 1 sun illumination has been obtained for cells of 0.64 cm2 active area with the best performing compositions. Diffusion limitations due to slow transport processes are analyzed and discussed.

Related Topics
Physical Sciences and Engineering Chemical Engineering Catalysis
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