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Aggregation behavior of differently substituted Ru(II)-complex dyes as sensitizers for electrodeposited ZnO solar cells

Paper ID Volume ID Publish Year Pages File Format Full-Text
27011 43993 2012 5 PDF Available
Title
Aggregation behavior of differently substituted Ru(II)-complex dyes as sensitizers for electrodeposited ZnO solar cells
Abstract

Properties of newly developed Ru(II)-complex dye, cis-bis(isothiocyanato) (2,2′-bipyridyl-4,4′-dicarboxylato) (N-(4-butoxyphenyl)-N-2-pyridinyl-2-pyridinamine)-ruthenium(II) (J13), having a triarylamine ligand have been studied in comparison with cis-bis(isothiocyanato) bis(2,2′-bipyridyl-4,4′-dicarboxylato)-ruthenium(II) (N3), as photosensitizers for solar cells employing electrodeposited porous ZnO thin films. Quantification of dye loading as well as change of the film morphology on extension of the soaking time in solutions of these dyes indicated spontaneous monolayer formation of the J13 dye, in contrast to the strongly aggregating N3 dye. Overloading of the N3 dye molecules not directly bound to ZnO caused decreased Jsc as well as worsening of F.F., so that the efficiency of the N3 cell created a peak with a moderate dipping time. On the other hand, the efficiency of the J13 cells simply saturated to a value of ca. 4% as the dye monolayer was formed, indicating its better chemical match with ZnO.

► Novel Ru(II) tryarylamine complex (J13) dye photosensitizer for ZnO solar cells. ► Porous crystalline ZnO thin films by electrodeposition. ► J13 forms a monolayer, while classical N3 dye strongly aggregates. ► Dye aggregation reduces photocurrent and fill factor. ► Right chemistry between ZnO and dye is important for the best cell performance.

Keywords
Zinc oxide; Electrodeposition; Dye-sensitized solar cell; Ru(II)-complex; Aggregation
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Aggregation behavior of differently substituted Ru(II)-complex dyes as sensitizers for electrodeposited ZnO solar cells
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 242, 15 August 2012, Pages 67–71
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us