Patent ID: 7704555
Filing Date: 2010-04-27
Classification: G02F

Abstract:
1. A method of making an electrochromic device in which a selected 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 a 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 species while providing inflow of a selected gas adjacent the substrate, the gas selected to react with the mobile species while the mobile species diffuses into the metal oxide film to thereby form the electrochromic layer from the electrochromic precursor film and to 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.