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].

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

Product Details

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

 Recommended Uses

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.

MSDS Documentation

FK102-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.
4. Flexible and highly efficient perovskite solar cells with a large active area incorporating cobalt-doped poly(3-hexylthiophene) for enhanced open-circuit voltage, J. Jung et al., J. Mater. Chem. A, 2017, 5, 12158-12167 (2017); DOI: 10.1039/C7TA03541A.
5. One-Year stable perovskite solar cells by 2D/3D interface engineering, G. Grancini et al., Nat Commun., 8: 15684 (2017); doi: 10.1038/ncomms15684

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To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.

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