Synthesis and Application of New Ruthenium Dye Containing 9,9-[di-(2-ethylhexane]-4,5-diazafluorene Ligand

Yanchun Ma, Ying Gao, Yupeng Wang, Yunhui Li, Xiuyun Yang


The traditional organic ruthenium dyes have some disadvantages, such as the routes of the synthesis of ligands being too time-consuming, the separation and purification of the ligands being difficult, the lower photo-electric conversion efficiency and so on. In view of these disadvantages, we designed and synthesized a new 9,9-[di-(2-ethylhexane]-4,5-diazafluorene ligand. Then we got the dye-sensitized solar cell using this ligand. Such ruthenium dye contains a kind of derivative of 4,5-diazafluorene ligand, and comparing with the traditional bipyridine ligands, the synthetic route is more simple and it’s suitable for large-scale practical application. The short-circuit current (Jsc), open-circuit voltage(Voc), fill factor (ff) and photoelectric conversion efficiency(?) of the prepared dye-sensitized solar cell is 14.75-15.02 mA/cm2, 681-696 mV, 0.66-0.70, 6.8-7.0 % respectively, when measured in the standard AM 1.5 simulated sunlight.

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Modern Applied Science   ISSN 1913-1844 (Print)   ISSN 1913-1852 (Online)

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