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US 2012/0069418 A1Published application
Electrochromic formulation, method for the production thereof, and organic electrochromic component
OwnerAndreas Kanitz, Marek Maleika +1inventors
InventorsAndreas Kanitz, Marek Maleika, Wolfgang Roth
Life of this patent
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Abstract
The service life of EC components can be substantially increased by eliminating the need for conducting salt additives, which can decompose the formulation by adverse reactions. At the same time, salt-like structures are formed by the active electrochromic components themselves.
Claims12
1-7. (canceled)
A formulation comprising:
- at least one electrochromically active compound, wherein salt-like cationic and anionic species are ionogenic and are present in the compound, the cationic and anionic species being mutually responsible for charge exchange in the formulation, so that simple counterions are unnecessary.
A method for producing a formulation, comprising:
- providing at electrochromically active compound, wherein salt-like cationic and anionic species are ionogenic and are present in the compound;
- mixing the electrochromically active compound into a dispersing agent and a white pigment, with a speed mixer, so that a paste formulation is produced having a viscosity such that the formulation can be processed using a doctor blade technique,
- wherein the cationic and anionic species are mutually responsible for charge exchange in the formulation so that simple counterions are unnecessary.
An electrochromic organic component comprising:
- at least first and second electrodes;
- and
- an electrochromic formulation sandwiched between the first and second electrodes, the electrochromic formulation comprising at least one electrochromically active compound, wherein salt-like cationic and anionic species are ionogenic and are present in the compound, the cationic and anionic species being mutually responsible for charge exchange in the formulation, so that simple counterions are unnecessary.
Dependencies are inferred from the claim text.