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].
| 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 |
Chemical structure of FK102-Co(II)TFSi Salt; Chemical formula: C28H21CoN11O8S4F12
| Purity | >98% |
| Melting point | 167 °C (lit.) |
| Appearance | Orange powder |
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