Issue 12, 2011
From the journal:

Green Chemistry

Supercritical carbon dioxide as a solvent for deposition of a tailored dye in dye sensitized solar cells†

Subashani Maniam,a   Andrew B. Holmes,ab   Julia Krstina,a   Gary A. Leekec  and  Gavin E. Collis*a  

* Corresponding authors

a CSIRO Materials Science and Engineering, Flexible Electronics Theme, Future Manufacturing Flagship, Clayton South, Victoria, Australia
E-mail: Gavin.Collis@csiro.au

b School of Chemistry, Bio21 Institute, University of Melbourne, Victoria, Australia

c School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, UK

Abstract

We report a new technique whereby dyes can be deposited onto metal oxide surfaces using supercritical carbon dioxide (scCO2) for use in solar cell applications. This process eliminates the need for hazardous organic solvents and waste solvents generated during the dyeing process. The solubility of a perylene anhydride dye in scCO2 is enhanced by the incorporation of fluorinated alkyl subsituents and the use of masked carboxylic binding groups. This allows fast deposition of the dye onto the TiO2 photoanode, resulting in efficient photovoltaic performance. The unreacted dye is then easily recovered in a solid form after the deposition process by venting the carbon dioxide.

Graphical abstract: Supercritical carbon dioxide as a solvent for deposition of a tailored dye in dye sensitized solar cells

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Article information

DOI
https://doi.org/10.1039/C1GC15864C
Article type
Communication
Submitted
18 Jul 2011
Accepted
05 Sep 2011
First published
30 Sep 2011

Green Chem., 2011,13, 3329-3332

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Supercritical carbon dioxide as a solvent for deposition of a tailored dye in dye sensitized solar cells

S. Maniam, A. B. Holmes, J. Krstina, G. A. Leeke and G. E. Collis, Green Chem., 2011, 13, 3329 DOI: 10.1039/C1GC15864C

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