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Xanthan‐Based Hydrogel for Stable and Efficient Quasi‐Solid Truly Aqueous Dye‐Sensitized Solar Cell with Cobalt Mediator
Author(s) -
Galliano Simone,
Bella Federico,
Bonomo Matteo,
Giordano Fabrizio,
Grätzel Michael,
Viscardi Guido,
Hagfeldt Anders,
Gerbaldi Claudio,
Barolo Claudia
Publication year - 2021
Publication title -
solar rrl
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.544
H-Index - 37
ISSN - 2367-198X
DOI - 10.1002/solr.202000823
Subject(s) - cobalt , xanthan gum , dye sensitized solar cell , aqueous solution , chemical engineering , photovoltaic system , materials science , electrolyte , chemistry , electrode , composite material , organic chemistry , metallurgy , rheology , engineering , electrical engineering
Aqueous 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 Co 2+ concentration, Co 2+ /Co 3+ ratio, and xanthan gum amount modifications on the overall photovoltaic parameters of lab‐scale solar cells.