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Concentration effects on the performance of bis(diimine) copper(I) dyes in dye-sensitized solar cells

Brauchli, S. Y. and Constable, E. C. and Housecroft, C. E.. (2015) Concentration effects on the performance of bis(diimine) copper(I) dyes in dye-sensitized solar cells. Dyes and Pigments, 113. pp. 447-450.

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Abstract

A critical factor that influences the performance of heteroleptic copper(I) bis(diimine) dyes in dye-sensitized solar cells (DSSCs) is shown to be the concentration of solution of the homoleptic copper(I) bis(diimine) complex used during the stepwise assembly of the dye on the semiconductor surface. The performance of the heteroleptic dye [Cu(1)(2)]+ (1 = ((6,6′-dimethyl-[2,2′-bipyridine]-4,4′-diyl)bis(4,1-phenylene))bis(phosphonic acid); 2 = 4,4′-(6,6′-dimethyl-[2,2′-bipyridine]-4,4′-diyl)bis(N,N-bis(4-methoxyphenyl)aniline) is investigated as a function of the concentration of [Cu(2)2][PF6] which undergoes ligand exchange with TiO2-anchored 1. With 0.1 mM solutions of [Cu(2)2][PF6], optimal performance is reached on the day of fabricating the DSSC. Solar cells made using more concentrated solutions of [Cu(2)2][PF6] show a ripening effect and require increasing times (up to 4 days) to reach their optimal performance.
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 Constable, Edwin Charles and Brauchli, Sven
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 12:34
Deposited On:05 Dec 2014 09:45

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