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

In this study we report the application of three cobalt redox shuttles in 100% aqueous electrolyte dyesensitised 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.


Published in:
Physical Chemistry Chemical Physics, 18, 12, 8419-8427
Year:
2016
Publisher:
Cambridge, Royal Soc Chemistry
ISSN:
1463-9076
Laboratories:




 Record created 2016-07-19, last modified 2018-03-17


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