Patent ID: 8004744

Claim:
A method for the preparation of an electrochromic device comprising: a) providing a first conductive layer, b) depositing one of an electrochromic electrode layer and 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, said ion-conductor layer comprising at least two ion transport layers and a buffer layer, said at least two ion transport layers and said buffer layer sequentially applied such that one of said at least two ion transport layers is in communication with said first deposited electrode, d) depositing the other of said electrochromic electrode layer and said counter electrode layer on said ion-conductor layer, thereby providing a second deposited electrode in communication with the other of said at least two ion transport layers, and e) depositing a second conductive layer on said second deposited electrode.