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Product Code M2019A1-10g
Price $247 ex. VAT

A pyrazole-pyridine cobalt complex

as a dopant for hole transport layer materials in perovskite solar cells


Overview | Specifications | MSDS | Literature and Reviews


Cobalt complex, tris(2-(1H-pyrazol-1-yl)pyridine) cobalt(II) di[bis(trifluoromethane)sulfonimide] (FK102 Co(II)-TFSI) is used as p-dopant materials to enhance the conductivity and lead to a downward shift of the energy levels in most case of the perovskite solar cells. With efficient charge extraction and transfer from perovskite active layer, it considerably improves the device performance and power conversion efficiency.

It is also believed that adding Co(II)-TFSI as dopant material will make the perovskite solar cell more stable even in the presence of oxygen and moisture [5].

Cobalt pyrazol-pyridine complex

Cobalt pyrazol-pyridine complex

A p-type dopant for spiro-OMeTAD in perovskite solar cells

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Large TFSI- anions

Large TFSI- anions

stablize the oxidized spiro-OMeTAD

High purity

High purity

>98%

General Information


Full name Tris(2-(1H-pyrazol-1-yl)pyridine)cobalt(II) di[bis(trifluoromethane)sulfonimide]
Synonyms Tris(2-(1H-pyrazol-1-yl)pyridine)cobalt(II) bis[bis(trifluoromethane)sulfonimide]
Chemical formula C28H21CoN11O8S4F12
Molecular weight 1054.71 g/mol
CAS number n/a
HOMO / LUMO No data available
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
FK102 Co(II)TFSi Salt
Chemical structure of FK102-Co(II)TFSi Salt; Chemical formula: C28H21CoN11O8S4F12

Product Details


Purity >98%
Melting point 167 °C (lit.)
Appearance Orange powder


MSDS Documentation


FK102-Co(II)TFSi Salt MSDSFK102-Co(II)TFSi Salt MSDS Sheet

Literature and Reviews


  1. Compositional and morphological engineering of mixed cation perovskite films for highly efficient planar and flexible solar cells with reduced hysteresis, C. Wang et al., Nano Energy 35, 223–232 (2012); https://doi.org/10.1016/j.nanoen.2017.03.048.
  2. Dye-sensitized Solar Cells: New Approaches with Organic Solid-state Hole Conductors, N. Vlachopoulos et al., Chimia 69, 41–51 (2015); doi:10.2533/chimia.2015.41.
  3. Cobalt Dopant with Deep Redox Potential for Organometal Halide Hybrid Solar Cells, T. Koh et al., Chemsuschem, 7(7), 1909-1914 (2014); DOI: 10.1002/cssc.201400081.

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