CAS Number 847665-45-6
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 (DSSCs) 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 [5].
| 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 |
| Chemical formula | C52H52N6O6RuS2 |
| Molecular weight | 1022.21 |
| CAS number | 847665-45-6 |
| HOMO / LUMO | n/a (Eg = 1.7 eV [1]) |
| 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. |
Chemical structure of K19 Dye; Chemical formula: C52H52N6O6RuS2.
| Purity | >85% (HPLC) |
| Melting point | >300 °C |
| Appearance | Dark brown powder |
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