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Electrochromic Device with Self-forming Ion transfer Layer and Lithium Fluoro-Nitride Electrolyte

  • US 20070292606A1
  • Filed: 06/06/2007
  • Published: 12/20/2007
  • Est. Priority Date: 06/20/2006
  • Status: Active Grant
First Claim
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1. ) A method of making an electrochromic device in which a selected mobile ionic species is selectively movable through an electrolyte layer interposed between an electrochromic layer and an ion storage layer, the method comprising the sequentially executed steps of:

  • providing, in an evacuated vacuum processing chamber, a substrate having a first electrode layer disposed thereon;

    depositing onto the first electrode layer an electrochromic precursor film comprising a metal oxide selected for its capacity to have the selected mobile species diffused thereinto;

    providing a source of the mobile ionic species while providing inflow of a selected gas adjacent the substrate, the gas selected to react with the mobile ionic species while the mobile ionic species diffuses into the metal oxide film to thereby form the electrochromic layer from the electrochromic precursor film and to simultaneously form an ion transfer layer on an exposed surface of the electrochromic layer;

    forming, on the ion transfer film, an electrolyte layer;

    depositing an ion storage film onto the electrolyte film; and

    depositing a second, transparent, electrode onto the ion storage film; and

    opening the vacuum processing chamber.

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