%0 Journal Article %T Dye and Cobalt Electrolyte Interaction Effect on the Performance of Dye-Sensitized Solar Cell %J Inorganic Chemistry Research %I Iranian Chemical Society %Z 2538-1865 %A Parsa, Zahra %A Tahay, Pooya %A Rabiee, Navid %A Safari, Nasser %D 2019 %\ 12/01/2019 %V 3 %N 2 %P 145-157 %! Dye and Cobalt Electrolyte Interaction Effect on the Performance of Dye-Sensitized Solar Cell %K Dye-sensitized solar cells %K Redox mediator %K Cobalt complexes %K Interaction %K Photovoltaic %R 10.22036/icr.2020.219286.1058 %X The effects of changing ligand structures of cobalt complexes as electrolytes on the performance of the dye-sensitized solar cell were investigated. In this paper, cobalt(II/III) tris(2,2′-bipyridine), cobalt(II/III) tris(4,4′-dimethyl-2,2′-bipyridine) and cobalt(II/III) tris(4,4´-dimethoxy-2,2′-bipyridine) complexes as electrolytes in conjugate with organic dye D149 were investigated to consider the correlation of the cobalt complexes structural on the efficiency of the dye-sensitized solar cell. The Voc values of the prepared cells are related to the redox potential of their complexes and the maximum Voc was observed with cobalt(II/III) tris(2,2′-bipyridine) electrolyte. The obtained results represented that the cobalt(II/III) tris(4,4´-dimethyl- 2,2′-bipyridine) electrolyte has the highest efficiency in the solar cell compared with other cobalt complexes. These observed results have been interpreted by a possible interaction between the dye and cobalt complexes, which is more pronounced in the cobalt(II/III) tris(4,4´-dimethoxy- 2,2′-bipyridine) cell. This interaction should be fine-tuning with the structure of dye and complex to increase the efficiency of the dye-sensitized solar cell. In addition, the results demonstrated that a thinner layer of the TiO2 film decrease both the effects of mass transport issues and the charge recombination, therefore, it has significant advantages for cobalt electrolyte. %U https://www.inorgchemres.org/article_107261_31a615c1291eff48b5bd98c59191eddb.pdf