FK102-Co(III)TFSi Salt

10 g

Not in stock (price excludes taxes)
Order Code: M2021A1
MSDS sheet

General Information

Full name Tris(2-(1H-pyrazol-1-yl)pyridine)cobalt(III) tri[bis(trifluoromethane)sulfonimide
Synonyms FK102
Chemical formula C30H21CoN12O12S6F18
Molecular weight 1334.87 g/mol
CAS number n/a
Solubility Acetonitrile
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

Product Details

Purity  >98%
Melting point 194-199 °C
Appearance Orange powder


Chemical structure of FK102 Co(III)TFSi Salt; Chemical formula: C30H21CoN12O12S6F18.



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.

Recommended use:

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

  1. Transformation of the Excited State and Photovoltaic Efficiency of CH3NH3PbI3 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.
  2. Doping and alloying for improved perovskite solar cells, Y. Zhou et al., J. Mater. Chem. A, 4, 17623-17635 (2016); DOI: 10.1039/C6TA08699C.
  3. Credible evidence for the passivation effect of remnant PbI2 in CH3NH3PbI3 films in improving the performance of perovskite solar cells, S. Wang et al., Nanoscale, 8, 6600-6608 (2016); DOI: 10.1039/C5NR08344C.
  4. 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.