Abstract
This article presents the first report of a tandem dye-sensitized solar cell employing optically transparent, non-corrosive metal-free thiolate/disulfide based electrolytes and a set of sensitizers with complementary absorption spectra. Sodium 1-phenyl-1H-tetrazole-5-thiolate and its reduced form 5,5′-dithiobis(1-phenyl-1H-tetrazole) (thiolate/disulfide) were used as redox mediators for photocathodic dye-sensitized solar cells (p-DSCs), yielding higher open circuit voltages (285 mV) compared to the more commonly used iodide-based redox couple (226 mV). The herein achieved efficiencies of p-DSCs (0.51 %) and pn-DSCs (1.33 %) employing the thiolate/disulfide-based electrolytes were comparable to p-DSCs and pn-DSCs employing conventional iodide-based electrolytes (0.44 % and 1.19 %)
Original language | English |
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Pages (from-to) | 458-463 |
Number of pages | 6 |
Journal | Electrochimica Acta |
Volume | 182 |
DOIs | |
Publication status | Published - 2015 |
Keywords
- Thiolate/Disulfide Electrolyte
- p-type dye-sensitized solar cells
- tandem dye-sensitized solar cells
- redox electrolyte
- p-DSC