Influence of pyridine ligand nature and the corresponding ruthenium(II) dye molecular structure on the performance of dye-sensitized solar cells

Georgia Konti; Evaggelia Chatzivasiloglou; Vlassis Likodimos; Georgios Kantonis; Athanassios G Kontos; Athanassios I Philippopoulos; Polycarpos Falaras

doi:10.1039/b817470a

Influence of pyridine ligand nature and the corresponding ruthenium(II) dye molecular structure on the performance of dye-sensitized solar cells

Photochem Photobiol Sci. 2009 May;8(5):726-32. doi: 10.1039/b817470a. Epub 2009 Mar 20.

Authors

Georgia Konti¹, Evaggelia Chatzivasiloglou, Vlassis Likodimos, Georgios Kantonis, Athanassios G Kontos, Athanassios I Philippopoulos, Polycarpos Falaras

Affiliation

¹ Institute of Physical Chemistry, NCSR Demokritos, 153 10, Aghia Paraskevi Attikis, Athens, Greece.

PMID: 19424549
DOI: 10.1039/b817470a

Abstract

cis-[Ru(bpy)(2)(L(n))]Cl(2) (n = 1, L(1) = 4-carboxy-2-(2'-pyridyl)quinoline (); n = 2, L(2) = 2,2'-pyridine-4,4'-dicarboxylic acid ()); and cis-[Ru(bpy)(2)(L')(2))]Cl(2) (L' = 4-pyridinecarboxylic acid ()) complexes, with surface anchoring groups, are prepared from the reaction of cis-[Ru(bpy)(2)Cl(2)] () with the appropriate ligand (L(1), L(2), L'). Ion exchange in aqueous solution with NH(4)PF(6) gives the corresponding bis(hexafluorophosphate) derivatives cis-[Ru(bpy)(2)(L(1))](PF(6))(2) (), cis-[Ru(bpy)(2)(L(2))](PF(6))(2) () and cis-[Ru(bpy)(2)(L')(2)](PF(6))(2) (), respectively. The photo-electrochemical properties of the dyes () are investigated and the efficiency of the corresponding dye sensitized solar cells is compared to a N719 sensitized device, under similar fabrication and testing conditions.