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Energies 2016, 9(5), 384; doi:10.3390/en9050384

Cobalt-Based Electrolytes for Dye-Sensitized Solar Cells: Recent Advances towards Stable Devices

1
GAME Lab, CHENERGY Group, Department of Applied Science and Technology—DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
2
Department of Chemistry and NIS Interdepartmental Centre, Università degli Studi di Torino, Via Pietro Giuria 7, 10125 Torino, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Tapas Mallick
Received: 10 April 2016 / Revised: 10 May 2016 / Accepted: 11 May 2016 / Published: 19 May 2016
(This article belongs to the Special Issue Dye Sensitized Solar Cells)
View Full-Text   |   Download PDF [3279 KB, uploaded 19 May 2016]   |  

Abstract

Redox mediators based on cobalt complexes allowed dye-sensitized solar cells (DSCs) to achieve efficiencies exceeding 14%, thus challenging the emerging class of perovskite solar cells. Unfortunately, cobalt-based electrolytes demonstrate much lower long-term stability trends if compared to the traditional iodide/triiodide redox couple. In view of the large-scale commercialization of cobalt-based DSCs, the scientific community has recently proposed various approaches and materials to increase the stability of these devices, which comprise gelling agents, crosslinked polymeric matrices and mixtures of solvents (including water). This review summarizes the most significant advances recently focused towards this direction, also suggesting some intriguing way to fabricate third-generation cobalt-based photoelectrochemical devices stable over time. View Full-Text
Keywords: dye-sensitized solar cell; cobalt electrolyte; cobalt complex; stability; polymer electrolyte; quasi-solid electrolyte dye-sensitized solar cell; cobalt electrolyte; cobalt complex; stability; polymer electrolyte; quasi-solid electrolyte
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Bella, F.; Galliano, S.; Gerbaldi, C.; Viscardi, G. Cobalt-Based Electrolytes for Dye-Sensitized Solar Cells: Recent Advances towards Stable Devices. Energies 2016, 9, 384.

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