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US 11,966,140 B2Granted
Counter electrode for electrochromic devices
AssigneeView, Inc.
InventorsDane Gillaspie, Sridhar K. Kailasam, Robert T. Rozbicki
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Abstract
The embodiments herein relate to electrochromic stacks, electrochromic devices, and methods and apparatus for making such stacks and devices. In various embodiments, an anodically coloring layer in an electrochromic stack or device is fabricated to include nickel tungsten tantalum oxide (NiWTaO). This material is particularly beneficial in that it is very transparent in its clear state.
Claims27
A method of fabricating an electrochromic stack, the method comprising:
- forming a cathodically coloring layer comprising a cathodically coloring electrochromic material;
- and
- forming an anodically coloring layer comprising nickel tungsten tantalum oxide,
- wherein the nickel tungsten tantalum oxide has an atomic ratio of Ni:(W+Ta) that is between 1.5:1 and 3:1, and has an atomic ratio of W:Ta that is between about 0.1:1 and 6:1,
- wherein the anodically coloring layer comprises two or more sub-layers that have different compositions and/or different relative concentration, and
- wherein a first sub-layer comprises a binary metal oxide and a second sub-layer comprises a ternary metal oxide.
3 more elements
An electrochromic stack, comprising:
- a cathodically coloring layer comprising a cathodically coloring material;
- and
- an anodically coloring layer comprising nickel tungsten tantalum oxide,
- wherein the nickel tungsten tantalum oxide has an atomic ratio of Ni:(W+Ta) that is between 1.5:1 and 3:1, and has an atomic ratio of W:Ta that is between 0.1:1 and 6:1,
- wherein the anodically coloring layer comprises two or more sub-layers that have different compositions and/or different relative concentration, and
- wherein a first sub-layer comprises a binary metal oxide and a second sub-layer comprises a ternary metal oxide.
3 more elements
Dependencies are inferred from the claim text.