Electrochromic light valve and method of manufacturing it as well as its use
First Claim
1. Electrochromic light valve, comprising(a) a pair of electrodes, at least one of said electrodes being transparent;
- (b) an electrolyte layer arranged between said electrodes;
(c) an active electrochromic layer whose color can change, said active electrochromic layer being interposed between one of said electrodes and said electrolyte layer;
(d) an optically passive and transparent charge storage layer whose transparence remains essentially unchanged, said charge storage layer being interposed between the other of said electrodes and said electrolyte layer;
(e) said active electrochromic layer being arranged and adapted for reversibly changing its coloration by acceptance and donation of electrons from and to said one electrode;
(f) said active electrochromic layer for reversibly changing its coloration further being arranged and adapted for acceptance and donation of ions from and to said electrolyte;
(g) said charge storage layer being arranged and adapted for donating and accepting ions from and to said electrolyte;
(h) said charge storage layer further being arranged and adapted for donating and accepting electrons to and from said other electrode; and
(i) said charge storage layer further being supersaturated with at least one of an element and a compound providing and accepting ions.
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Accused Products
Abstract
The invention makes available an electrochromic right valve (1) with an active electrochromic layer (2) and a passive electrochromic layer (3). Between the two electrochromic layers is an electrolyte (4). Each of the electrochromic layers is connected to an associated electrode (5, 6). The active electrochromic layer can accept electrons from its electrodes and ions of a particular element from the electrolyte to become reversibly colored. The passive electrochromic layer acts as a reservoir for ions of the species concerned, donating such ions to and accepting them from the electrolyte. At the operating temperature of the electrochromic light valve, the passive layer is super-saturated with the element which provides the ions of the species concerned. The invention also covers a method of manufacturing the electrochromic light valve and uses of the valve.
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Citations
45 Claims
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1. Electrochromic light valve, comprising
(a) a pair of electrodes, at least one of said electrodes being transparent; -
(b) an electrolyte layer arranged between said electrodes; (c) an active electrochromic layer whose color can change, said active electrochromic layer being interposed between one of said electrodes and said electrolyte layer; (d) an optically passive and transparent charge storage layer whose transparence remains essentially unchanged, said charge storage layer being interposed between the other of said electrodes and said electrolyte layer; (e) said active electrochromic layer being arranged and adapted for reversibly changing its coloration by acceptance and donation of electrons from and to said one electrode; (f) said active electrochromic layer for reversibly changing its coloration further being arranged and adapted for acceptance and donation of ions from and to said electrolyte; (g) said charge storage layer being arranged and adapted for donating and accepting ions from and to said electrolyte; (h) said charge storage layer further being arranged and adapted for donating and accepting electrons to and from said other electrode; and (i) said charge storage layer further being supersaturated with at least one of an element and a compound providing and accepting ions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification