Patent ID: 8764951
Filing Date: 2014-07-01
Classification: C23C,G02F

Abstract:
1. A method of fabricating an electrochromic device, the method comprising: (a) forming either an electrochromic layer including an electrochromic material or a counter electrode layer including a counter electrode material by sputtering with a first sputter gas having an oxygen concentration; (b) forming an intermediate layer over the electrochromic layer or the counter electrode layer by sputtering with a second sputter gas, wherein the second sputter gas has a higher concentration of oxygen than the first sputter gas, to thereby form a stack comprising a bilayer or graded layer comprising (i) the electrochromic layer or the counter electrode layer formed in (a), and (ii) the intermediate layer, where the intermediate layer includes an oxygen rich form of the electrochromic material or the counter electrode material, wherein the intermediate layer is in direct physical contact with the electrochromic or counter electrode layer formed in (a); (c) exposing the intermediate layer to lithium; (d) depositing the other of the electrochromic layer and the counter electrode layer on the intermediate layer; and (e) converting at least part of the intermediate layer to an ion conducting region, coextensive with the intermediate layer, comprising an electronically-insulating ionically-conducting material and the material of the intermediate layer.