Xanthan-Based Hydrogel for Stable and Efficient Quasi-Solid Truly Aqueous Dye-Sensitized Solar Cell with Cobalt Mediator

Galliano, SimoneBella, FedericoBonomo, MatteoGiordano, FabrizioGratzel, MichaelViscardi, GuidoHagfeldt, AndersGerbaldi, ClaudioBarolo, Claudia2021-04-102021-04-102021-04-102021-03-1710.1002/solr.202000823https://infoscience.epfl.ch/handle/20.500.14299/177156WOS:000629669800001Aqueous dye-sensitized solar cells (DSSCs) are emerging as a promising alternative to enhance both the lifetime and environmental friendliness of traditional DSSCs. Herein, a cobalt-based, jellified (with xanthan gum) aqueous electrolyte, leading to a valuable efficiency exceeding 4% (V-OC = 847 mV, J(SC) = 6.73 mA cm(-2), fill factor = 74%), is reported. Design of experiment is used to precisely and significantly study, at a multivariate level, the effects produced by the Co2+ concentration, Co2+/Co3+ ratio, and xanthan gum amount modifications on the overall photovoltaic parameters of lab-scale solar cells.Energy & FuelsMaterials Science, MultidisciplinaryEnergy & FuelsMaterials Scienceaqueous electrolytescobalt redox couplesdesign of experimentdyesensitized solar cellsxanthan gumXanthan-Based Hydrogel for Stable and Efficient Quasi-Solid Truly Aqueous Dye-Sensitized Solar Cell with Cobalt Mediatortext::journal::journal article::research article