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US 2014/0190567 A1Published application
Additives for dye-sensitized solar cells
AssigneeMerck Patent GmbH
InventorsKentaro Kawata, Tomohisa Goto, Hiroki Yoshizaki
Life of this patent
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Abstract
The present invention relates to the use of at least one imidazol derivative of formula I or 1-(3,3,4,4,4-pentafluorobutyl)-1H-imidazole, 1-(3,3,4,4,4-pentafluorobutyl)-1,2,3-triazole or 1-(2′-thioethyl)ethylimidazole as additive in dye-sensitized solar cells and to special electrolyte formulations and a dye-sensitized solar cell comprising at least one compound of formula I or 1-(3,3,4,4,4-pentafluorobutyl)-1H-imidazole, 1-(3,3,4,4,4-pentafluorobutyl)-1,2,3-triazole or 1-(2′-thioethyl)ethylimidazole.
Claims15
A compound of formula I
- in which
- Ra, Rb, Rc, Rd and Re independently of each other are
- H, F, Cl or
- straight-chain or branched alkyl with 1 to 20 C atoms which optionally may be partially or fully fluorinated or chlorinated,
- n is 1, 2, 3 or 4,
- m is 1, 2, 3 or 4.
3 more elements
Dependencies are inferred from the claim text.