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NIR-absorbing Heptamethine dyes with tailor-made counterions for application in light to energy conversion


Véron, Anna C; Zhang, Hui; Linden, Anthony; Nüesch, Frank; Heier, Jakob; Hany, Roland; Geiger, Thomas (2014). NIR-absorbing Heptamethine dyes with tailor-made counterions for application in light to energy conversion. Organic Letters, 16(4):1044-1047.

Abstract

A method to exchange the counterion of cyanine dyes to Δ-TRISPHAT– and PF6– is presented. The influence of these counterions on the photophysical and electrochemical properties of the cyanine dye in solution is discussed, and tendencies in the solid packing are highlighted by X-ray crystal structures. The compounds were applied in semitransparent bilayer organic solar cells together with C60, and a power conversion efficiency of 2.2% was achieved while maintaining a high transparency level in the visible region of 66%.

Abstract

A method to exchange the counterion of cyanine dyes to Δ-TRISPHAT– and PF6– is presented. The influence of these counterions on the photophysical and electrochemical properties of the cyanine dye in solution is discussed, and tendencies in the solid packing are highlighted by X-ray crystal structures. The compounds were applied in semitransparent bilayer organic solar cells together with C60, and a power conversion efficiency of 2.2% was achieved while maintaining a high transparency level in the visible region of 66%.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Language:English
Date:2014
Deposited On:02 Apr 2014 08:45
Last Modified:18 Apr 2018 11:44
Publisher:American Chemical Society
ISSN:1523-7052
Funders:Brazilian Swiss Joint Research Programme
OA Status:Closed
Publisher DOI:https://doi.org/10.1021/ol4034385

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