Porphyrin-Sensitized Solar Cells with Cobalt (II/III)–Based Redox Electrolyte Exceed 12 Percent Efficiency

@article{Yella2011PorphyrinSensitizedSC,
  title={Porphyrin-Sensitized Solar Cells with Cobalt (II/III)–Based Redox Electrolyte Exceed 12 Percent Efficiency},
  author={Aswani Yella and Hsuan‐Wei Lee and Hoi Nok Tsao and Chenyi Yi and Aravind Kumar Chandiran and Md. Khaja Nazeeruddin and Eric Wei‐Guang Diau and Chen‐Yu Yeh and Shaik Mohammed Zakeeruddin and Michael Gr{\"a}tzel},
  journal={Science},
  year={2011},
  volume={334},
  pages={629 - 634}
}
Simultaneous modification of the dye and redox shuttle boosts the efficiency of a dye-sensitized solar cell. The iodide/triiodide redox shuttle has limited the efficiencies accessible in dye-sensitized solar cells. Here, we report mesoscopic solar cells that incorporate a Co(II/III)tris(bipyridyl)–based redox electrolyte in conjunction with a custom synthesized donor-π-bridge-acceptor zinc porphyrin dye as sensitizer (designated YD2-o-C8). The specific molecular design of YD2-o-C8 greatly… 
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References

SHOWING 1-10 OF 49 REFERENCES
Characteristics of the iodide/triiodide redox mediator in dye-sensitized solar cells.
TLDR
The iodide/triiodide redox couple has good solubility, does not absorb too much light, has a suitable redox potential, and provides rapid dye regeneration, and it is expected that overall efficiencies above 15% might be achieved if half of this internal potential loss could be gained.
Design of organic dyes and cobalt polypyridine redox mediators for high-efficiency dye-sensitized solar cells.
Dye-sensitized solar cells (DSCs) with cobalt-based mediators with efficiencies surpassing the record for DSCs with iodide-free electrolytes were developed by selecting a suitable combination of a
Efficient Light‐Harvesting Layers of Homeotropically Aligned Porphyrin Derivatives
The dye-sensitized solar cell, based on a wide-bandgap semiconductor photosensitized with an organic dye, is an attractive low-cost alternative to conventional silicon-based solar cells. Absorption
An alternative efficient redox couple for the dye-sensitized solar cell system.
TLDR
A series of new cobalt complexes synthesized and evaluated as redox mediators for dye-sensitized nanocrystalline TiO(2) solar cells yielded incident photon-to-current conversion efficiencies (IPCE) of up to 80% and the one-electron-transfer redoxmediator performed best among the compounds investigated.
CoII(dbbip)22+ Complex Rivals Tri-iodide/Iodide Redox Mediator in Dye-Sensitized Photovoltaic Cells
Transient absorption spectroscopy was employed to study charge-transfer dynamics in dye-sensitized nanocrystalline solar cells (DSSC) containing a new one-electron redox mediator,
High-efficiency dye-sensitized solar cells with ferrocene-based electrolytes.
Dye-sensitized solar cells based on iodide/triiodide (I(-)/I(3)(-)) electrolytes are viable low-cost alternatives to conventional silicon solar cells. However, as well as providing record
An organic redox electrolyte to rival triiodide/iodide in dye-sensitized solar cells.
TLDR
A novel, iodide-free redox electrolyte in conjunction with a sensitized heterojunction that has negligible absorption in the visible spectral range is presented, a very attractive feature for flexible DSCs that use transparent conductors as current collectors.
Sensitized hole injection of phosphorus porphyrin into NiO: toward new photovoltaic devices.
TLDR
This work represents the first example of a photovoltaic cell in which a mechanism of hole photoinjection has been characterized, and can be rationalized by the rapid back recombination reaction between the reduced sensitizer and the injected hole which prevents an efficient regeneration of the Sensitizer ground state from the iodide/triiodide redox mediator.
Novel zinc porphyrin sensitizers for dye-sensitized solar cells: synthesis and spectral, electrochemical, and photovoltaic properties.
TLDR
Quantum-chemical (DFT) results support the spectroelectrochemical data for a delocalization of charge between the porphyrin ring and the amino group in the first oxidative state of diarylamino-substituted p Morphyrin 5, which exhibits the best photovoltaic performance among all theporphyrins under investigation.
Substituted polypyridine complexes of cobalt(II/III) as efficient electron-transfer mediators in dye-sensitized solar cells.
TLDR
The best mediator, based on tris(4,4'-di-tert-butyl-2,2'-dipyridyl)cobalt(II/III) perchlorate, resulted in DSSCs exhibiting efficiencies within 80% of that of a comparable iodide/triiodide-mediated DSSC, representing a nonvolatile, noncorrosive, and practical alternative as an efficient electron-transfer mediator in D SSCs.
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