Color excursion mitigation in electrochromic devices
First Claim
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1. An electrochromic device comprising:
- a chamber defined by a first conductive surface of a first substrate, a second conductive surface of a second substrate, and a sealing member joining the first substrate to the second substrate;
an electrochromic medium comprising a blue cathodic electroactive compound and up to three anodic electroactive compounds;
whereinthe electrochromic medium is disposed within the chamber;
the anodic electroactive compounds comprise a green anodic electroactive compound and one or two gray anodic electroactive compounds; and
the anodic electroactive compounds comprise from about 8 mol % to about 15 mol % gray anodic electroactive compounds.
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Abstract
An electrochromic device includes a chamber defined by a first conductive surface of a first substrate, a second conductive surface of a second substrate, and a sealing member joining the first substrate to the second substrate; an electrochromic medium containing a blue cathodic electroactive compound and up to three anodic electroactive compounds; wherein the electrochromic medium is disposed within the chamber; the anodic electroactive compounds include a green anodic electroactive compound and one or two gray anodic electroactive compounds; and the anodic electroactive compounds include from about 8 mol % to about 15 mol % gray anodic electroactive compounds.
26 Citations
20 Claims
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1. An electrochromic device comprising:
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a chamber defined by a first conductive surface of a first substrate, a second conductive surface of a second substrate, and a sealing member joining the first substrate to the second substrate; an electrochromic medium comprising a blue cathodic electroactive compound and up to three anodic electroactive compounds; wherein the electrochromic medium is disposed within the chamber; the anodic electroactive compounds comprise a green anodic electroactive compound and one or two gray anodic electroactive compounds; and the anodic electroactive compounds comprise from about 8 mol % to about 15 mol % gray anodic electroactive compounds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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- 17. A method to minimize or remove purple hue from an electrochromic medium within an electrochromic device in a darkened state, the method comprising adjusting a concentration of gray anodic electroactive compound of the electrochromic medium to from about 8 mol % to about 15 mol % relative to a total molar concentration of anodic electroactive compounds of the electrochromic medium.
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19. An electrochromic device comprising an electrochromic medium comprising a blue cathodic electroactive compound and up to three anodic electroactive compounds;
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wherein; the anodic electroactive compounds comprise a green anodic electroactive compound and one or two gray anodic electroactive compounds; and the electrochromic device exhibits, in a low transmission state, a u′
-v′
color space wherein a u′
value is from about 0.15 to about 0.30 and a v′
value is from about 0.30 to about 0.40. - View Dependent Claims (20)
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Specification