Cis-bis(thiocyanato)(2,2'-bipyridyl-4,4'-dicarboxylic acid)(4,4'-bis(phexyloxystyryl)-2,2'-bipyridine)ruthenium(II), K19 Dye sensitizer, is ruthenium complex dye developed for high-efficiency dye-sensitized solar cells (DSSC). High extinction coefficient (18200 M-1cm-1) of K19 sensitizer enables realisation of a new generation thin-film dye-sensitized solar cells (DSCs) yielding higher conversion efficiency [1, 2].
It has been reported that solar cells employing the K19 dye in combination with a binary ionic liquid electrolyte gave over 7.0% efficiency with excellent stability under light soaking at 60°C for 1000 hours .
|Full name||Cis-bis(thiocyanato)(2,2'-bipyridyl-4,4'-dicarboxylic acid)(4,4'-bis(phexyloxystyryl)-2,2'-bipyridine)ruthenium(II)|
|Synonyms||K19 sensitizer, Ru(4,4-dicarboxylic acid-2,2′-bipyridine)(4,4′-bis(p-hexyloxystyryl)-2,2-bipyridine)(NCS)2|
|HOMO / LUMO||n/a (Eg = 1.7 eV )|
|Solubility||no data available|
|Classification / Family||Transition metal complex, Ruthenium complex, Bipyridyl ligands, Energy materials, Dye-sensitized solar cells DSSC) materials, Donor materials, OPV materials.|
|Purity||>90% (1H NMR)|
|Melting point||>300 °C|
|Appearance||Dark brown powder|
Literature and Reviews
- A High Molar Extinction Coefficient Sensitizer for Stable Dye-Sensitized Solar Cells, P. Wang et al., J. Am. Chem. Soc., 127, 808-809 (2005); DOI: 10.1021/ja0436190.
- High Molar Extinction Coefficient Heteroleptic Ruthenium Complexes for Thin Film Dye-Sensitized Solar Cells, D. Kuang et al., J. Am. Chem. Soc., 128 (12), 4146–4154 (2006); DOI: 10.1021/ja058540p.
- Structure/Function Relationships in Dyes for Solar Energy Conversion: A Two-Atom Change in Dye Structure and the Mechanism for Its Effect on Cell Voltage, B. C. O’Regan et al., J. Am. Chem. Soc., 131 (10), 3451–3458 (2009); DOI: 10.1021/ja806869x.
- Electron Transport and Recombination in Solid-State Dye Solar Cell with Spiro-OMeTAD as Hole Conductor, F. Fabregat-Santiago et al., J. Am. Chem. Soc., 131 (2), 558-562 (2009); DOI: 10.1021/ja805850q.
- Ruthenium Sensitizers and Their Applications in Dye-Sensitized Solar Cells, Y. Qin et al., Inter. J. Photoenergy, 2012, 291579 (2012); doi:10.1155/2012/291579.
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