Synthesis and characterization of some new ruthenium (II) complexes as photosensitizers in dye-sensitized solar cells

Authors

  • Ahmed H. Osman Department of Chemistry, Faculty of Science, Assiut University, Assiut, 71516, Egypt
  • Waleed A. El-Said Department of Chemistry, Faculty of Science, Assiut University, Assiut, 71516, Egypt
  • M. Abd El-Shakour

DOI:

https://doi.org/10.24297/jac.v12i5.6265

Keywords:

Dye-sensitized solar cells, Ruthenium complexes, PANI, K

Abstract

New ruthenium (II) complexes, [Ru(DHZ)2(bpy)], [Ru(SCN)2(bpy)(DMSO)2], [Ru(SCN)2(dmbpy)(DMSO)2] and [RuCl2(salen)]-2,
where bpy = 2,2'- bipyridine, DHZ = 1,5-diphenylthiocarbazone, dmbpy = 4,4'-dimethyl-2,2' bipyridine and salen = 2,2'-
ethylenebis(nitrilomethylidene)diphenol were synthesized and characterized by elemental analysis, FTIR, UV-Vis spectroscopy and
thermal analysis. From data of these investigations the structural formula and the mode of bonding were obtained. These complexes
were successfully applied to sensitization of nano-crystalline TiO2 based solar cells (DSSCs). The photovoltaic efficiencies of the
studied DSSCs increase in the following order [Ru(DHZ)2(bpy)]< [Ru(SCN)2(bpy)(DMSO)2]< [Ru(SCN)2(dmbpy)(DMSO)2]<
[RuCl2(salen)]-2. This increase is in agreement with the light harvesting of these complexes as indicated from their absorption spectra.
Ferrioxalate complex enhanced the performance of some investigated cells. Therefore, a mechanism of this improvement has been
postulated. Polyaniline as well as iodine doped polyaniline modified FTO electrode has been tested as promising counter electrodes.
The efficiencies of the cells using iodine doped polyaniline is higher than that of polyaniline, which is assignable to the high
conductivity of iodine.

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References

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Published

2017-07-21

How to Cite

Osman, A. H., El-Said, W. A., & El-Shakour, M. A. (2017). Synthesis and characterization of some new ruthenium (II) complexes as photosensitizers in dye-sensitized solar cells. JOURNAL OF ADVANCES IN CHEMISTRY, 12(5), 4413–4426. https://doi.org/10.24297/jac.v12i5.6265

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