Tris(2-(1H-pyrazol-1-yl)pyridine)cobalt(III) tri[bis(trifluoromethane)sulfonimide, FK102-Co(III)TFSi Salt is commonly used as electrolyte for DSSC or p-type dopant for Spiro-MeOTAD in perovskite solar cells, together with Lithium bis(trifluoromethanesulfonyl)imide (LiTFSi) and 4-tert-Butylpyridine (TBP).
In comparison to triiodide-based redox electrolytes, cobalt complexes in general increase photovoltages and particularly at lower light levels (e.g. for indoor applications), significantly increase device power output.
|Full name||Tris(2-(1H-pyrazol-1-yl)pyridine)cobalt(III) tri[bis(trifluoromethane)sulfonimide|
|Molecular weight||1334.87 g/mol|
|HOMO / LUMO||n/a|
|Classification / Family||Cobalt complex, Hole transport and dopant materials, Dye Sensitized Solar Cell (DSSC) Materials, Hole Conductor Cobalt Dopants, Organic Photovoltaic (OPV) Materials, Organic and Printed Electronics, Perovskite Materials|
|Melting point||194-199 °C|
|Liquid-based eletrolytes||Typically 0.15-0.2M of Co(II) and ca. 0.05M Co(II)|
|Solid-state photovoltaic cells||Up to 10 weight % added to the hole transport material system.|
Literature and Reviews
- Transformation of the Excited State and Photovoltaic Efficiency of Ch2Nh2PbI3 Perovskite upon Controlled Exposure to Humidified Air, J. A. Christians et al., J. Am. Chem. Soc. 2015, 137, 1530−1538 (2015); DOI: 10.1021/ja511132a.
- Doping and alloying for improved perovskite solar cells, Y. Zhou et al., J. Mater. Chem. A, 4, 17623-17635 (2016); DOI: 10.1039/C6TA08699C.
- Credible evidence for the passivation effect of remnant PbI2 in Ch2Nh2PbI3 films in improving the performance of perovskite solar cells, S. Wang et al., Nanoscale, 8, 6600-6608 (2016); DOI: 10.1039/C5NR08344C.
- Effects of 4-tert-butylpyridine on perovskite formation and performance of solution-processed perovskite solar cells, Y. Shi et al., J. Mater. Chem. A, 3, 22191-22198 (2015); DOI: 10.1039/C5TA05988G.
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