Electrochromic devices and methods
First Claim
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1. A method for the preparation of an electrochromic device comprising:
- a) providing a first conductive layer,b) depositing one of an electrochromic layer or a counter electrode layer on said first conductive layer, thereby providing a first deposited electrode,c) depositing an ion-conductor layer on said first deposited electrode,d) depositing the other of said electrochromic layer or said counter electrode layer on said ion-conductor layer, thereby providing a second deposited electrode,e) depositing lithium onto said second deposited electrode whereby a mixed tungsten-nickel oxide of the counter electrode layer is reduced,f) depositing a second conductive layer on said second deposited electrode, andg) heat treating said electrochromic device,wherein said counter electrode layer comprises a mixed tungsten-nickel oxide,wherein said mixed tungsten-nickel oxide in said electrochromic device is substantially crystalline, andwherein an amount of nickel in said mixed oxide ranges from 30% to 70% by weight of said mixed oxide.
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Abstract
A heat treated electrochromic device comprising an anodic complementary counter electrode layer comprised of a mixed tungsten-nickel oxide and lithium, which provides a high transmission in the fully intercalated state and which is capable of long term stability, is disclosed. Methods of making an electrochromic device comprising an anodic complementary counter electrode comprised of a mixed tungsten-nickel oxide are also disclosed.
191 Citations
27 Claims
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1. A method for the preparation of an electrochromic device comprising:
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a) providing a first conductive layer, b) depositing one of an electrochromic layer or a counter electrode layer on said first conductive layer, thereby providing a first deposited electrode, c) depositing an ion-conductor layer on said first deposited electrode, d) depositing the other of said electrochromic layer or said counter electrode layer on said ion-conductor layer, thereby providing a second deposited electrode, e) depositing lithium onto said second deposited electrode whereby a mixed tungsten-nickel oxide of the counter electrode layer is reduced, f) depositing a second conductive layer on said second deposited electrode, and g) heat treating said electrochromic device, wherein said counter electrode layer comprises a mixed tungsten-nickel oxide, wherein said mixed tungsten-nickel oxide in said electrochromic device is substantially crystalline, and wherein an amount of nickel in said mixed oxide ranges from 30% to 70% by weight of said mixed oxide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of making a counter electrode layer for use in connection with an electrochromic device comprising:
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a) depositing a film of mixed tungsten-nickel oxide on a substrate, b) reducing said mixed tungsten-nickel oxide film by depositing lithium on said film, and c) heating said counter electrode layer, wherein said mixed tungsten-nickel oxide in said counter electrode layer is substantially crystalline, wherein an amount of nickel in said mixed oxide ranges from 30% to 70% by weight of said mixed oxide. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method for the preparation of an electrochromic device comprising:
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a) providing a first conductive layer, b) depositing one of an electrochromic layer or a counter electrode layer comprising a mixed tungsten-nickel oxide on said first conductive layer, thereby providing a first deposited electrode, c) depositing an ion-conductor layer on said first deposited electrode, d) depositing the other of said electrochromic layer or said counter electrode layer on said ion-conductor layer, thereby providing a second deposited electrode, f) depositing lithium onto said second deposited electrode whereby the mixed tungsten-nickel oxide of the counter electrode is reduced, said lithium being deposited in an amount in excess of an amount which provides a maximum transmission through said counter electrode layer, e) depositing a second conductive layer on said second deposited electrode, and g) heating said electrochromic device, wherein said mixed tungsten-nickel oxide in said electrochromic device is substantially crystalline, wherein an amount of nickel in said mixed oxide ranges from 30% to 70% by weight of said mixed oxide.
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27. A method for the preparation of an electrochromic device comprising:
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a) providing a first conductive layer, b) depositing one of an electrochromic layer or a counter electrode layer comprising a mixed tungsten-nickel oxide in crystalline form on said first conductive layer, thereby providing a first deposited electrode, c) depositing an ion-conductor layer on said first deposited electrode, d) depositing the other of said electrochromic layer or said counter electrode layer on said ion-conductor layer, thereby providing a second deposited electrode, e) depositing lithium onto said counter electrode layer whereby said mixed tungsten-nickel oxide is reduced, wherein said lithium is deposited in an amount of from 10% to 40% above an amount which provides a maximum transmission through said counter electrode layer, f) depositing a second conductive layer on said second deposited electrode, and g) heat treating said electrochromic device, wherein an amount of nickel in said mixed oxide ranges from about 30% to about 70% by weight of said mixed oxide.
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Specification