title: Chemically Altering the Solubility and Durability of Dyes for Sensitized Solar Cells.
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 ECEs of 7.70% were obtained that exceed the performance of the alkyl dye when deposited by conventional methods.
authors.affiliation: †CSIRO Manufacturing Flagship, Advanced Fibers and Industrial Chemicals, Clayton South 3169, Victoria Australia.
authors.forename: Subashani
authors.initials: S
authors.lastname: Maniam
authors.affiliation: †CSIRO Manufacturing Flagship, Advanced Fibers and Industrial Chemicals, Clayton South 3169, Victoria Australia.|‡School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne 3010, Victoria Australia.
authors.forename: Andrew B
authors.initials: AB
authors.lastname: Holmes
authors.affiliation: §School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
authors.forename: Gary A
authors.initials: GA
authors.lastname: Leeke
authors.affiliation: ∥CSIRO Manufacturing Flagship, Virtual Nanoscience, Parkville 3052, Victoria Australia.
authors.forename: Ante
authors.initials: A
authors.lastname: Bilic
authors.affiliation: †CSIRO Manufacturing Flagship, Advanced Fibers and Industrial Chemicals, Clayton South 3169, Victoria Australia.
authors.forename: Gavin E
authors.initials: GE
authors.lastname: Collis