Completely solid electrochromic device, electrochromic bilayer for said device, and method for producing said device

摘要

An all-solid electrochromic device with controlled infrared reflection or emission, in particular of electro-controllable type, comprising a stack successively comprising from a back face (3) as far as a front face (1) exposed to infrared radiation (2): a substrate (4) made of an electron-conducting material, or a substrate made of a non-electron-conducting material coated with a layer made of an electron-conducting material, forming a first electrode; a layer made of a first proton storage electrochromic material (5); a layer of a proton-conducting and electron-insulating electrolyte (6); a bilayer comprising a layer of a non-electrochromic, sub-stoichiometric tungsten oxide WO3-y forming a second electrode; said tungsten oxide WO3-y layer being arranged underneath a layer with variable infrared reflection of a second electrochromic material with variable proton intercalation rate, chosen from among crystallized tungsten oxide HxWO3-c and hydrated crystallized tungsten oxide HxWO3.nH20-c; a protective layer (10) transparent to infrared radiation.;Bilayer for this device.;Method for preparing this device.

主权项

1. An all-solid electrochromic device with controlled infrared reflection or emission comprising a stack, said stack successively comprising from a back face towards a front face exposed to infrared radiation:
a) a substrate made of an electron-conducting material, or a substrate made of a non-electron-conducting material coated with a layer made of an electron-conducting material, said substrate made of an electron-conducting material or said layer made of an electron-conducting material forming a first electrode; b) a layer made of a first proton storage electrochromic material; c) a layer of a proton-conducting and electron-insulating electrolyte; d) a bilayer comprising a layer of a non-electrochromic, sub-stoichiometric tungsten oxide, WO3-y, where y is comprised between 0.2 and 1, optically absorbent in the infrared, electron-conducting, porous, forming a second electrode; said layer of tungsten oxide WO3-y being arranged underneath a layer with variable infrared reflection, of a second electrochromic material with variable proton intercalation rate, chosen from among crystallized tungsten oxide HxWO3-c where x is comprised between 0 and 1, and hydrated crystallized tungsten oxide HxWO3.nH20-c where x is comprised between 0 and 1 and n is an integer of 1 to 2; e) a protective layer transparent to infrared radiation, made of an inorganic material.