ELECTROCHROMIC WINDOW WITH POLYMER LAYER

摘要

An electrochromic window includes a first transparent substrate, an electroconductive film electrode, a transparent electrochromic film in contact with said electroconductive film, an ion-conductive layer in contact with said electrochromic film, a counter electrode in contact with said ion-conductive layer, and a second transparent substrate overlaying the counter electrode. A preferred copolymer electrolyte is a reaction product of a sulfonic acid monomer such as acrylamidomethylpropane sulfonic acid or ethylene sulfonic acid, and a hydrophilic acrylate comonomer such that the copolymer is curable with ultraviolet radiation. The optimum moisture content of the ion-conducting polymer sheet is maintained by means of a moisture vapor barrier surrounding the perimeter of the cell. A plurality of bus bars extend across the electroconductive film electrode to distribute electrical current throughout the film electrode and provide a more uniform current density between the film electrode and the counter electrode.