Patent ID: 7894120

Claim:
An electrically controllable/electrochemical device having all solid-state electrochromic components comprising: at least one carrier substrate; a first electronically conductive layer; a first electrochemically active layer capable of reversibly inserting ions, cations, H + , or Li + , or anions, or OH − , or anions and made of an anodic or respectively cathodic electrochromic material; an electrolyte layer having an electrolyte function; a second electrochemically active layer capable of reversibly inserting the ions, or made of a cathodic or respectively anodic electrochromic material; and a second electronically conductive layer, wherein at least one of the first and second electrochemically active layers has a sufficient thickness to allow all the ions to be inserted without electrochemically disfunctioning the active layers, a thickness of the first electrochemically active layer being between 70 and 250 nm, and a thickness of the second electrochemically active layer being between 400 and 1500 nm, wherein the electrolyte layer comprises at least one layer based on a material chosen from tantalum oxide, tungsten oxide, molybdenum oxide, antimony oxide, niobium oxide, chromium oxide, cobalt oxide, titanium oxide, tin oxide, nickel oxide, zinc oxide, zinc oxide alloyed with aluminum, zirconium oxide, aluminum oxide, silicon oxide, silicon oxide alloyed with aluminum, silicon nitride, silicon nitride alloyed with aluminum or with boron, boron nitride, aluminum nitride, vanadium oxide, vanadium oxide alloyed with aluminum, and tin zinc oxide, wherein each electrochemically active layer comprises at least one of the following compounds: oxides of tungsten W, niobium Nb, tin Sn, bismuth Bi, vanadium V, nickel Ni, iridium Ir, antimony Sb, and tantalum Ta, alone or as a mixture, and wherein a quantity of charges exchanged during an operation cycle of the device is between 25 mC/cm 2 and 80 mC/cm 2 , and a light transmittance in a bleached state of the device is higher than 40%.