COUNTER ELECTRODE FOR ELECTROCHROMIC DEVICES
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Accused Products
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-tin-oxide (NiWSnO). This material is particularly beneficial in that it is very transparent in its clear state.
20 Citations
22 Claims
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1. (canceled)
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2. A method of fabricating an electrochromic device, the method comprising:
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(a) forming either an electrochromic layer comprising tungsten oxide or a counter electrode layer comprising nickel-tungsten-tin-oxide (NiWSnO), wherein the electrochromic layer or counter electrode layer formed in (a) includes an oxygen-rich portion comprising an oxygen-rich tungsten oxide or an oxygen-rich NiWSnO, respectively; (b) forming the other of the electrochromic layer and the counter electrode layer directly on the electrochromic layer or counter electrode layer formed in (a), without first providing an ion conducting electronically insulating layer between the electrochromic layer and the counter electrode layer; and (c) converting at least a portion of the oxygen-rich tungsten oxide or the oxygen-rich NiWSnO to a material that is substantially ion conducting and substantially electronically insulating. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
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11. An integrated deposition system for fabricating an electrochromic stack, the system comprising:
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a plurality of deposition stations aligned in series and interconnected and operable to pass a substrate from one station to the next without exposing the substrate to an external environment, wherein the plurality of deposition stations comprise (i) a first deposition station containing one or more material sources for depositing a cathodically coloring layer; (ii) a second deposition station containing one or more material sources for depositing an anodically coloring layer comprising nickel-tungsten-tin-oxide (NiWSnO); and a controller comprising program instructions for passing the substrate through the plurality of deposition stations in a manner that deposits on the substrate (i) the cathodically coloring layer, and (ii) the anodically coloring layer in direct contact with each other. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification