Electrochromic pane arrangement

An electrochromic panel structure comprising:

• a first transparent electrode substrate;
• a second transparent electrode substrate disposed in parallel spaced apart relationship to said first transparent electrode substrate;
• a first transparent electrode layer disposed on a surface of the first transparent electrode substrate;
• an electrochromic layer disposed on the first transparent electrode layer opposite the first transparent electrode substrate;
• a second transparent electrode layer disposed on a surface of the second transparent electrode substrate;
• a third transparent layer disposed on the second transparent electrode layer capable of reversibly storing a charge by ion insertion;
• an ion conducting layer having a first surface disposed in surface contact with the electrochromic layer and a second surface disposed in surface contact with third transparent layer, said ion conducting layer comprising a polymer matrix containing at least one salt including a difficult to oxidize anion, at least one dopant capable of providing cations and at least one salt including an easy to oxidize anion;
• and means for electrically connecting the first transparent electrode layer and the second transparent electrode layer to a voltage source, whereby a transmission property of the electrochromic layer selected from transparency, color or both, may be reversibly varied by absorption or emission of electrons from the first electrode layer into the electrochromic layer and acceptance or emission of ions of the dopant from or into the ion conducting layer and reversible storage of charge by the third transparent layer.

An electrochromic pane arrangement comprising:

• a first transparent electrode substrate, a second electrode substrate arranged parallel to and at a distance from the first transparent electrode substrate, and an ion conducting layer joining the first and second electrode substrates comprising a polymer matrix, at least one salt including difficult to oxidise anions, at least one dopant for providing cations, at least one salt including easy to oxidise anions, and at least one easily oxidisable organic compound, which is electrically neutral and undergoes no color change upon changing the transmission of the electrochromic pane arrangement, wherein a surface of the first transparent electrode substrate facing towards the ion conducting layer includes a first transparent electrode layer disposed thereon and an actively electrochromic layer disposed on the first transparent electrode layer in surface contact with the ion conducting layer whose transparency and/or color is reversibly variable as a result of absorption or emission of electrons via the first electrode layer and acceptance or emission of ions of the dopant from/to the ion conducting layer, and a surface of the second electrode substrate facing towards the ion conducting layer including a second transparent electrode layer disposed thereon, and a third transparent layer disposed on the second transparent electrode layer in surface contact with the ion conducting layer capable of reversibly storing charge.