Tris(2-(1H-pyrazol-1-yl)pyridine)cobalt(II) di[hexafluorophosphate], commonly known as FK102 Co(II)PF6 Salt, is used as redox electrolyte in DSSC or hole transport and dopant materials in perovskite solar cells.
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(II) di[hexafluorophosphate]|
|Molecular weight||784.35 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||362 oC (lit.)|
|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
- Sequential deposition as a route to high-performance perovskite-sensitized solar cells, J. Burschka et al., Nature 499, 316–319 (2013); doi:10.1038/nature12340.
- Perovskite solar cells - An overview of critical issues, A.B. Djurišića et al., Prog. Quant. Electron., 1-37 (2017); https://doi.org/10.1016/j.pquantelec.2017.05.002.
- A cobalt complex redox shuttle for dye-sensitized solar cells with high open-circuit potentials, J-H. Yum et al., Nat Commun., 3, 631 (2012); doi: 10.1038/ncomms1655.
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