Patent ID: 9274396
Filing Date: 2016-03-01
CPC Classification: G02F

Claim Text:
1. An electrochemical device having electrically controllable optical and/or energy transmission properties, comprising: a first electrode coating; a second electrode coating; an electrochemically active layer formed on the first electrode coating and located between the first electrode coating and the second electrode coating, wherein the electrochemically active layer comprises an inorganic material capable of reversibly switching between a first state and a second state having different optical and/or energy transmission properties by the insertion and extraction of ions; and an electrolyte between the electrochemically active layer and the second electrode coating, wherein the material of the electrochemically active layer is a material, the insertion and extraction of the ions of which during switching between the first state and the second state correspond to a variation in the plasma wavelength λ, of the material and the material has, at the plasma wavelength λ, a full width at half maximum Δλ of the absorption spectrum equal to or less than 1 micron in the first state and in the second state, wherein said material of the electrochemically active layer has, in the first state, a concentration of free charge carriers such that said material has an absorption spectrum satisfying the relationship (λ−Δλ/2)≧1.5 μm, and wherein said material of the electrochemically active layer has, in the second state, a concentration of free charge carriers such that said material has an absorption spectrum satisfying the relationship 0.7 μm≦−Δλ/2≦1.4 μm.