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Electrochromic devices

  • US 6,906,842 B2
  • Filed: 05/24/2001
  • Issued: 06/14/2005
  • Est. Priority Date: 05/24/2000
  • Status: Expired due to Fees
First Claim
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1. An electrochromic device having an electrochromic layer including an electrochromic coating and a counterelectrode, wherein the electrochromic coating includes tungsten oxide and at least one dopant selected from the group consisting of an alkali metal oxide and transition metal oxides, the alkali metal oxide dopant being lithium oxide, sodium oxide or potassium oxide, and wherein the counterelectrode comprises vanadium oxide doped with at least one dopant selected from the group consisting of tin oxide and antimony oxide.

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