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Synthesis and Evaluation of Photovoltaic Properties of an Organic Dye for Dye-Sensitized Solar Cells

Authors: M. Hosseinnejad, K. Gharanjig


In the present study, metal free organic dyes were prepared and used as photo-sensitizers in dye-sensitized solar cells. Double rhodanine was utilized as the fundamental electron acceptor group to which electron donor aldehyde with varying substituents was attached to produce new organic dye. This dye was first purified and then characterized by analytical techniques. Spectrophotometric evaluations of the prepared dye in solution and on a nano anatase TiO2 substrate were carried out in order to assess possible changes in the status of the dyes in different environments. The results show that the dye form j-type aggregates on the nano TiO2. Additionally, oxidation potential measurements were also carried out. Finally, dye sensitized solar cell based on synthesized dye was fabricated in order to determine the photovoltaic behavior and conversion efficiency of individual dye.

Keywords: Conversion Efficiency, dye-sensitized solar cell, photovoltaic behavior, sensitizer

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[1] M. Hosseinnezhad, S. Moradian, K. Gharanjig, “Synthesis and Application of Two Organic Dyes for Dye-Sensitized Solar Cells”, Prog. Color Colorants Coat. Vol. 6, pp. 109-117, 2013.
[2] M. Hosseinnezhad, S. Moradian, K. Gharanjig, “Investigation of effect of anti-aggregation agent on the performance of nanostructure dye-sensitized solar cells”, Opto-electron. Rev., vol. 23, pp. 126-130, 2015.
[3] M. Hosseinnezhad, S. Moradian, K. Gharanjig, F. Afshar Taromi, “Synthesis and Characterization of Eight Organic Dyes for Dye-Sensitized Solar Cells”, Mater. Technol., vol. 29, pp. 112-117, 2014.
[4] J. Chang, C. Lee, D. Kumar, P. Chen, L. Lin, K.R. Thomas, K. Ho, “Co-sensitization promoted light harvesting for dye-sensitized solar cells using unsymmetrical squaraine dye and novel pyrenoimidazole-based dye”, J. Power Sources., vol. 240, pp. 779-785, 2013.
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[6] M. Hosseinnezhad, S. Moradian, K. Gharanjig, “Novel organic dyes based on thioindigo for dye-sensitized solar cells”, Dye Pigments. Vol. 123, pp. 147-153, 2015.
[7] Hsiu-Yi Yang, Yung-Sheng Yen, Ying-Chan Hsu, Hsien-Hsin Chou, andJiann T. Lin, “Organic Dyes Incorporating the Dithieno(3,2-b:2′,3′-d)thiophene Moiety for Efficient Dye-Sensitized Solar Cells”, Org. Lett., Vol. 12, No. 1, 2010, 16-19.