Ultrathin electrochromic device for high optical modulation
AssigneeNitto Denko Corporation
InventorLiping Ma
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Abstract
The present disclosure relates to electrochromic devices including an insulating layer and at least one electrochromic material having one or more optical properties that may be changed upon application of an electric potential. The device may include a conductive nanoparticle layer and/or a buffer layer. Upon provision of an electric potential above a threshold, electrons and holes may be injected into the electrochromic material and blocked by the insulating layer, resulting in an accumulation of the electrons and holes in their respective electrochromic material resulting in a change to the one or more optical properties of the electrochromic material. An opposite electric potential may be provided to reverse the change in the one or more optical properties.
Claims20
An electrochromic element comprising:
- a first electrode layer, wherein the first electrode layer comprises a transparent conductive material;
- a first electrochromic layer in electrical communication with the first electrode layer, wherein the first electrochromic layer comprises a p-type electrochromic material;
- an insulating layer in electrical communication with the first electrochromic layer;
- a second electrochromic layer in electrical communication with the insulating layer, wherein the second electrochromic layer comprises an n-type electrochromic material;
- and
- a second electrode layer in electrical communication with the second electrochromic layer, wherein the second electrode layer comprises a transparent conductive material.
Dependencies are inferred from the claim text.