Jump to main content
Jump to site search

Issue 17, 2012
Previous Article Next Article

A panchromatic anthracene-fused porphyrin sensitizer for dye-sensitized solar cells

Author affiliations

Abstract

The development of ruthenium-free sensitizers which absorb light over a broad range of the solar spectrum is important for improving the power conversion efficiency of dye-sensitized solar cells. Here we study three chemically tailored porphyrin-based dyes. We show that by fusing the porphyrin core to an anthracene unit, we can extend the conjugation length and lower the optical gap, shifting the absorption spectrum into the near-infrared (NIR). All three dyes were tested in dye-sensitized solar cells, using both titanium dioxide and tin dioxide as the electron-transport material. Solar cells incorporating the anthracene-fused porphyrin dye exhibit photocurrent collection at wavelengths up to about 1100 nm, which is the longest reported for a porphyrin-based system. Despite extending the photon absorption bandwidth, device efficiency is found to be low, which is a common property of cells based on porphyrin dyes with NIR absorption. We show that in the present case the efficiency is reduced by inefficient electron injection into the oxide, as opposed to dye regeneration, and highlight some important design considerations for panchromatic sensitizers.

Graphical abstract: A panchromatic anthracene-fused porphyrin sensitizer for dye-sensitized solar cells

Back to tab navigation

Supplementary files

Publication details

The article was received on 16 May 2012, accepted on 16 May 2012 and first published on 28 Jun 2012


Article type: Paper
DOI: 10.1039/C2RA20952G
Citation: RSC Adv., 2012,2, 6846-6853
  •   Request permissions

    A panchromatic anthracene-fused porphyrin sensitizer for dye-sensitized solar cells

    J. M. Ball, N. K. S. Davis, J. D. Wilkinson, J. Kirkpatrick, J. Teuscher, R. Gunning, H. L. Anderson and H. J. Snaith, RSC Adv., 2012, 2, 6846
    DOI: 10.1039/C2RA20952G

Search articles by author

Spotlight

Advertisements