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Issue 12, 2016
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Development of high efficiency 100% aqueous cobalt electrolyte dye-sensitised solar cells

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Abstract

In this study we report the application of three cobalt redox shuttles in 100% aqueous electrolyte dye-sensitised solar cells (DSCs). By using chloride as a counter-ion for cobalt bipyridine, cobalt phenanthroline and cobalt bipyridine pyrazole, the redox shuttles were made water soluble; no surfactant or further treatment was necessary. A simple system of merely the redox shuttles and 1-methylbenzimidazole (MBI) in water as an electrolyte in combination with an organic dye and a mesoporous PEDOT counter electrode was optimised. The optimisation resulted in an average efficiency of 5.5% (record efficiency of 5.7%) at 1 sun. The results of this study present promising routes for further improvements of aqueous cobalt electrolyte DSCs.

Graphical abstract: Development of high efficiency 100% aqueous cobalt electrolyte dye-sensitised solar cells

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Supplementary files

Article information


Submitted
13 Jan 2016
Accepted
15 Feb 2016
First published
15 Feb 2016

Phys. Chem. Chem. Phys., 2016,18, 8419-8427
Article type
Paper

Development of high efficiency 100% aqueous cobalt electrolyte dye-sensitised solar cells

H. Ellis, R. Jiang, S. Ye, A. Hagfeldt and G. Boschloo, Phys. Chem. Chem. Phys., 2016, 18, 8419
DOI: 10.1039/C6CP00264A

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