Carbazole-substituted dialkoxybenzodithiophene dyes for efficient light harvesting and the effect of alkoxy tail length

Wagner K, Wagner P, Hasani F, Barnsley JE, Gordon KC, Lennert A, Guldi DM, Officer DL (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Dyes and Pigments Elsevier

Article Number: 109002

DOI: 10.1016/j.dyepig.2020.109002

Abstract

A set of new donor-π-acceptor organic PM dyes, bearing carbazole as electron donor and cyanoacrylic acid as electron acceptor, has been synthesized and fully characterized with particular focus on application in dye-sensitized solar cells (DSSCs). Importantly, a change in ‘linker’ structure resulted in the electron re-distribution in the oxidized dye, in general, and the localization of the ‘electron hole’, in particular, when compared with the MK2 benchmark. In addition, modifying the PM dyes with different lengths of alkoxy chains, that is, 1, 4, and 8 carbons, strongly influences the access of the oxidized cobalt ions to the surface affecting recombination, which had an appreciable effect on dye-sensitized solar cell performances. While the performance of the PM dyes was 15–20% lower than MK2, they are considerably easier and less expensive to synthesize, offering excellent potential for future DSSC applications.

Authors with CRIS profile

Dirk Michael Guldi Lehrstuhl für Physikalische Chemie I

Involved external institutions

University of Wollongong (UOW) AU Australia (AU) University of Otago NZ New Zealand (NZ)

How to cite

APA:

Wagner, K., Wagner, P., Hasani, F., Barnsley, J.E., Gordon, K.C., Lennert, A.,... Officer, D.L. (2020). Carbazole-substituted dialkoxybenzodithiophene dyes for efficient light harvesting and the effect of alkoxy tail length. Dyes and Pigments. https://doi.org/10.1016/j.dyepig.2020.109002

MLA:

Wagner, Klaudia, et al. "Carbazole-substituted dialkoxybenzodithiophene dyes for efficient light harvesting and the effect of alkoxy tail length." Dyes and Pigments (2020).

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