Journal article
Chemically Altering the Solubility and Durability of Dyes for Sensitized Solar Cells
S Maniam, AB Holmes, GA Leeke, A Bilic, GE Collis
Organic Letters | AMER CHEMICAL SOC | Published : 2015
Abstract
By designing dyes with fluoroalkyl groups, the optical and electronic properties of the alkyl analogue were maintained while dramatically altering the solubility. Dyes, F-TABTA (8) and its masked derivative F-TABTSi (9), that enable them to be deposited under conventional organic solvent and scCO2 conditions, respectively, were developed. In liquid DSSC devices, the fluoroalkyl dye (F-TABTA, 8) performs slightly better than its alkyl analogue (D21L6, 10), and interestingly, it was found that the former device showed better stability over time. Deploying the silyl-masked precursor F-TABTSi (9), this dye was deposited onto TiO2 photoanodes from scCO2 in very short contact times (2.5 h), and EC..
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Awarded by Engineering and Physical Sciences Research Council
Funding Acknowledgements
This work was funded by the CSIRO Future Manufacturing Flagship (Post-doctoral Fellowship for S.M.), CSIRO Fellow-Office of Chief Executive (OCE) Science Team (G.E.C., A.B., and A.B.H.). We thank Mr. Muhammad Kashif and Dr. Udo Bach (Department of Materials Engineering, Monash University) for use of the screen-printing equipment and helpful discussions.