Molecular Engineering of a Fluorene Donor for Dye-Sensitized Solar Cells
By A. Yella, R. Humphry‐Baker, B. Curchod, Negar Ashari Astani, J. Teuscher, Lauren E. Polander, S. Mathew, J. Moser, I. Tavernelli, U. Rothlisberger and 3 more. 2013
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To improve their efficiency beyond the state-of-the-art, D−π–A dyes must display increased spectral breadth and account for the physical limitations observed in the dye-sensitized solar cells. In particular, they should be designed to control the electron-transfer processes that ensure efficient dye-regeneration and prevent undesired electron recombination. In this article, the electronic and steric properties of a fluorene donor are engineered to meet all these requirements. This elegant donor is featured along with a cyclopentadithiophene bridge and a cyanoacrylic acid acceptor in JF419. A thorough comparison with Y123 and C218 demonstrates the relevance of the design. Relative to conventional donors, the fluorene construct described here enhances the light-harvesting properties, because of its exceptional electron-donating character. The functionalities used to induce the electronic push through the D−π–A structure also provide the dye with favorable steric properties. Indeed, the substitution around t...
Subfields: Materials Chemistry, Renewable Energy, Sustainability and the Environment
View Paper: https://www.semanticscholar.org/paper/da0dbc9147017a68c62b2a30de670dee3c66a038
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In Materials Chemistry
In Renewable Energy, Sustainability and the Environment
Citations in the corpus
- Status and outlook of sensitizers/dyes used in dye sensitized solar cells (DSSC): a review (2016, background): “To date, the best conversion efficiency of DSSCs using D-π-A-type organic dyes is about 10% [68,69].”