Journal
NATURE PHOTONICS
Volume 6, Issue 3, Pages 162-169Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/NPHOTON.2012.22
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Funding
- EPSRC [EP/F065884/1, EP/G049653/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F065884/1, EP/G049653/1] Funding Source: researchfish
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Several recent major advances in the design of dyes and electrolytes for dye-sensitized solar cells have led to record power-conversion efficiencies. Donor-pi-acceptor dyes absorb much more strongly than commonly employed ruthenium-based dyes, thereby allowing most of the visible spectrum to be absorbed in thinner films. Light-trapping strategies are also improving photon absorption in thin films. New cobalt-based redox couples are making it possible to obtain higher open-circuit voltages, leading to a new record power-conversion efficiency of 12.3%. Solid-state hole conductor materials also have the potential to increase open-circuit voltages and are making dye-sensitized solar cells more manufacturable. Engineering the interface between the titania and the hole transport material is being used to reduce recombination and thus attain higher photocurrents and open-circuit voltages. The combination of these strategies promises to provide much more efficient and stable solar cells, paving the way for large-scale commercialization.
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