Redox electrolyte has been proven to be extremely important in determining the optoelectronic properties in dye-sensitized solar cells (DSCs). Herein, we report on the application of various disulfide/thiolate redox shuttles within organic or aqueous electrolyte in conjunction with a dye-sensitized heterojunction. Electrochemical impedance spectroscopy is used to explore the difference in DSCs’ performance using disulfide/thiolate-based redox shuttles system in term of solvent effect and cations effect. A long interfacial charge recombination lifetime is found in disulfide/thiolate-based cells compared with that in iodide/triiodide cells, which can be attributed to different recombination states in these devices.
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Xu et al. (2012) studied this question.
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