Patent ID: 9581875
Date: 2017-02-28
CPC Classifications: G02F

Claim:
1. A method for the preparation of an electrochromic device comprising: a) providing a first conductive layer, b) depositing one of an electrochromic layer or a counter electrode layer on said first conductive layer, thereby providing a first deposited electrode, c) depositing an ion-conductor layer on said first deposited electrode, d) depositing the other of said electrochromic layer or said counter electrode layer on said ion-conductor layer, thereby providing a second deposited electrode, e) depositing lithium onto said second deposited electrode whereby a mixed tungsten-nickel oxide of the counter electrode layer is reduced, f) depositing a second conductive layer on said second deposited electrode, and g) heat treating said electrochromic device, wherein said counter electrode layer comprises a mixed tungsten-nickel oxide, wherein said mixed tungsten-nickel oxide in said electrochromic device is substantially crystalline, and wherein an amount of nickel in said mixed oxide ranges from 30% to 70% by weight of said mixed oxide.