Cu2 - XS films as counter-electrodes for dye solar cells with ferrocene-based liquid electrolytes

• Autor(a) principal: Congiu, M. [UNESP]
• Data de Publicação: 2016
• Outros Autores: Nunes-Neto, O. [UNESP], De Marco, M. L., Dini, D., Graeff, C. F.O. [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1016/j.tsf.2016.05.033; http://hdl.handle.net/11449/168725
• topic: Copper sulphide; Counter-electrodes; Dye solar cells; Ferrocene; Semiconductors; Solar energy

In this work, the application of hexagonal CuS nanoparticle layers as counter electrodes for dye sensitized solar cells has been studied. A fast, cheap and reliable deposition method was proposed for the one-step preparation of Cu2 - xS layers on F-doped SnO2 within 30 min through an ink-based technique. The electrodes prepared with our method were tested with iodine/iodide electrolyte, Co(II)/(III) bipyridine redox shuttle and Fe(II)/(III) ferrocene-based liquid electrolyte. The Cu2 - xS layers showed high efficiency and stability with the ferrocene/ferrocenium redox couple, showing a fast charge recombination kinetic, low charge transfer resistance (Rct = 0.73 Ω cm2), reasonably high limiting current (11.8 mA cm- 2) and high stability in propylene carbonate.