Back to results
US 2022/0026773 A1Published application
Multicolor, single active layer electrochromic devices
AssigneeUniversity of South Florida
InventorManoj Kumar Ram
Life of this patent
Estimating the term…
Abstract
An electrochromic device including a single unitary active layer with a dye having a nitrogen group and a conducting polymer having a nitrogen group. The active layer has a first color in an oxidized state and a second color in a reduced state; the electrochromic device has no other active layer.
Claims14
An electrochromic device comprising:
- a single unitary active layer containing a dye having a nitrogen group, and
- a conducting polymer having a nitrogen group, said conducting polymer being polyaniline;
- and
- polyvinyl alcohol (PVA), hydrochloric acid (HCl), and ammonium perdisulphate (APS) ((NH4)2S2Oa);
- wherein the single unitary active layer is configured to assume a first color in an oxidized state, a second color in a reduced state, and a third color in a state between the oxidized state and the reduced state;
- wherein said dye having a nitrogen group comprises one or more of methyl orange (MO), methyl viologen (MV), eosin Y (EO), congo red (CR), rhodamin B (RB), methylene blue (MB), allura red (AR), crystal violet, acid fuschin, nigrosine, cationic dye, and orange G;
- and
- wherein the electrochromic device comprises no other active layer.
5 more elements
An electrochromic device comprising:
- a single unitary active layer that has a first color in an oxidized state, a second color in a reduced state, and multiple colors corresponding to multiple states that are between the oxidized state and the reduced state, the single unitary active layer including:
- a base polymer that is polyvinyl alcohol (PVA);
- an acid that is hydrochloric acid (HCl);
- an oxidant that is ammonium perdisulphate (APS) ((NH4)2S2O8);
- a dye having a nitrogen group, and
- a conducting polymer having a nitrogen group, said polymer being polyaniline (PANI);
- and
- first and second transparent or translucent layers of material between which the single unitary active layer is disposed;
- wherein the device comprises no other material layers.
6 more elements
Dependencies are inferred from the claim text.