Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV19)
Publication date: 6th February 2020
In a dye sensitized solar cell (DSC) sensitized with natural dyes, is required the identification of the right molecules that can be used as pigment and that must have the specific electronic characteristics as the standard synthetized dyes. [1] In this study, a series of dyes never employed before in DSSC, were extracted from plants containing mainly anthocyanins compounds. The influence of extraction solvents, the use of co-adsorbents, [2] was investigated in order to monitor the effect of these changes on the cell performance. Influence of the co-sensitization was also explored. For the extractions, the solvent and the dye bath pH were the modified parameters; citric acid and deoxycholic acid were used as co-adsorbent. The study shows that the best results are obtained when the flavilium cation is stabilized at pH between 1.5 and 2.5. The use of co-adsorbents improves both the open circuit voltage (Voc) and mainly the short circuit current (Isc). Binary solutions were employed as dye bath for the co-sensitization that showed an improvement on the cell stability
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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