Electrochromic devices based on lithium insertion
First Claim
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1. A switching device capable of undergoing a reversible change in light transmittance or reflectance, comprising:
- a counter electrode, an electrolyte layer and an active electrode, wherein;
said electrolyte layer is disposed between the counter electrode and the active electrode, said electrolyte layer comprising either an alkali or alkaline earth metal ion; and
said active electrode comprises at least one element chosen from the group consisting of Sb, Bi, Si, Ge, Sn, Te, N, P, As, Ga, In, Al, C, Pb and I, and wherein upon the application of a current to the switching device, a compound comprising at least either an alkali or alkaline earth metal ion and an element of the active electrode is formed as part of the active electrode.
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Abstract
Electrochromic devices having as an active electrode materials comprising Sb, Bi, Si, Ge, Sn, Te, N, P, As, Ga, In, Al, C, Pb, I and chalcogenides are disclosed. The addition of other metals, i.e. Ag and Cu to the active electrode further enhances performance.
203 Citations
15 Claims
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1. A switching device capable of undergoing a reversible change in light transmittance or reflectance, comprising:
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a counter electrode, an electrolyte layer and an active electrode, wherein; said electrolyte layer is disposed between the counter electrode and the active electrode, said electrolyte layer comprising either an alkali or alkaline earth metal ion; and said active electrode comprises at least one element chosen from the group consisting of Sb, Bi, Si, Ge, Sn, Te, N, P, As, Ga, In, Al, C, Pb and I, and wherein upon the application of a current to the switching device, a compound comprising at least either an alkali or alkaline earth metal ion and an element of the active electrode is formed as part of the active electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A switching device capable of undergoing a reversible change in light transmittance or reflectance, comprising:
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a counter electrode, an electrolyte layer and an active electrode, wherein; said electrolyte layer is disposed between the counter electrode and the active electrode, said electrolyte layer comprising either an alkali or alkaline earth metal ion; and said active electrode comprises a transition metal chalcogenide, and wherein upon the application of a current to the switching device, a compound comprising at least either an alkali or alkaline earth metal ion and the transition metal chalcogenide of the active electrode is formed as part of the active electrode. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification