title: Panchromatic ruthenium sensitizer based on electron-rich heteroarylvinylene π-conjugated quaterpyridine for dye-sensitized solar cells.
abstract: The first example of a heteroarylvinylene π-conjugated quaterpyridine Ru(II) sensitizer (N1044) was synthesized and used in dye-sensitized solar cells; the dye has an effective panchromatic absorption band, covering the entire visible spectrum up to the NIR region, and superior electrochemical characteristics (HOMO/LUMO and bandgap energies) with respect to previous representative Ru(II) bi- and quaterpyridine sensitizers. A record IPCE curve ranging from 360 to 920 nm has been measured with a maximum of 65% at 646 nm and still 33% efficiency at 800 nm; this leads to substantially increased photocurrent (19.2 mA cm(-2)) when compared to the prototype N719 Ru(II) sensitizer.
authors.affiliation: Milano-Bicocca Solar Energy Research Center, Department of Materials Science, University of Milano-Bicocca, Via Cozzi 53, I-20125, Milano, Italy. alessandro.abbotto@mater.unimib.it
authors.forename: Alessandro
authors.initials: A
authors.lastname: Abbotto
authors.forename: Frederic
authors.initials: F
authors.lastname: Sauvage
authors.forename: Claudia
authors.initials: C
authors.lastname: Barolo
authors.forename: Filippo
authors.initials: F
authors.lastname: De Angelis
authors.forename: Simona
authors.initials: S
authors.lastname: Fantacci
authors.forename: Michael
authors.initials: M
authors.lastname: Graetzel
authors.forename: Norberto
authors.initials: N
authors.lastname: Manfredi
authors.forename: Chiara
authors.initials: C
authors.lastname: Marinzi
authors.forename: Mohammad K
authors.initials: MK
authors.lastname: Nazeeruddin