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Highly Efficient Porphyrin Sensitizers for Dye-Sensitized Solar Cells
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High Resolution Image Download MS PowerPoint Slide In TiO 2 -based dye-sensitized nanocrystalline solar cells, efficiencies of up to 11% have been obtained using Ru dyes, but the limited availability of these dyes together with their undesirable environmental impact have led to the search for cheaper and safer organic-based dyes. In this Letter, we report the synthesis, electronic, and photovoltaic properties of novel green porphyrin sensitizers. All six porphyrin dyes give solar cell efficiencies of ≥5%, but the best performing dye under standard global AM 1.5 solar conditions gives a short circuit photocurrent density ( j sc ) of 14.0 ± 0.20 mA/cm 2, an open circuit voltage of 680 ± 30 mV, and a fill factor of 0.74, corresponding to an overall conversion efficiency of 7.1%, which, for porphyrin-based sensitizers, is unprecedented. This same dye gives an efficiency of 3.6% in a solid-state cell with spiro -MeOTAD as the hole transporting component, comparable to solid-state cells incorporating the best performing ruthenium dyes.
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Metadata
- Authors
- Campbell, W. M., Jolley, K. W., Wagner, P., Wagner, K., Walsh, P. J., Gordon, K. C., Schmidt-Mende, L., Nazeeruddin, M. K., Wang, Q., Grätzel, M., & Officer, D. L.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2007-07-19
- Volume
- 111
- Issue
- 32
- Pages
- 11760-11762
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2054737018
- Cited by
- 749
- References
- 0
- FWCI
- 34.31
- Type
- journal article
- Language
- en
- Open access
- green
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