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"Surfaces-as-ligands, surfaces-as-complexes" strategies for copper(I) dye-sensitized solar cells

Schönhofer, E. and Bozic-Weber, B. and Martin, C. J. and Constable, E. C. and Housecroft, C. E. and Zampese, J. A.. (2015) "Surfaces-as-ligands, surfaces-as-complexes" strategies for copper(I) dye-sensitized solar cells. Dyes and Pigments, 115. pp. 154-165.

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Official URL: http://edoc.unibas.ch/dok/A6337519

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Abstract

A series of TiO2-supported copper(I) dyes, [Cu(Lanchor) (Lancillary)]+ with Lancillary = 2,2′:4′,4″:2″,2‴-quaterpyridine (1), 4,4′-bis(6-methyl-[2,2′-bipyridin]-4-yl)-1,1′-biphenyl (2), or 4,4′-bis(6,6′-dimethyl-[2,2′-bipyridin]-4-yl)-1,1′-biphenyl (3), and Lanchor = (6,6′-dimethyl-[2,2′-bipyridine]-4,4′-diyl)bis(4,1-phenylene)bis(phosphonic acid) (4), has been assembled in a stepwise manner. DSSCs incorporating these dyes demonstrate the need for 6,6′-substituents in both ligands in [Cu(Lanchor) (Lancillary)]+; both JSC and VOC increase on going from [Cu(4) (1)]+ to [Cu(4) (2)]+ to [Cu(4) (3)]+. First, second and third generation dyes [(4){Cu(3)}n]n+ (n = 1, 2 or 3) have been assembled using the 'surfaces-as-ligands, surfaces-as-complexes' strategy, although the separation between sites of electron injection and hole transporting domains in the multinuclear complexes fails to enhance DSSC performance. Replacing Lancillary2 in [Cu(4) (2)]+ by the metalloligand {Ru(bpy)2(2)}2+ improves dye performance due to the better spectral response of the heteronuclear [Cu(4){(2)Ru(bpy)2}]3+ complex. This assembly approach presents a flexible method of tuning dye properties while retaining the surface-bound bis(diimine)copper(I) domain.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Constable)
05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Housecroft)
UniBasel Contributors:Housecroft, Catherine Elizabeth and Schönhofer, Ewald and Bozic Weber, Biljana and Constable, Edwin Charles and Zampese, Jennifer Ann and Martin, Colin
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Elsevier
ISSN:0143-7208
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:11 Oct 2017 12:35
Deposited On:06 Feb 2015 09:59

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