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Electrochromic device with controlled infrared reflection

An electrochromic and infrared reflection technology, which is applied in instruments, nonlinear optics, sustainable buildings, etc., can solve problems such as increased response time or switching time, and uneven changes in large surface states

Active Publication Date: 2011-06-15
SAINT-GOBAIN GLASS FRANCE
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  • Abstract
  • Description
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Problems solved by technology

[0016] However, it has been found that for the thickness to which they remain transparent, layers based on these materials are not entirely satisfactory insofar as they are not sufficiently conductive that when an appropriate voltage is applied across the terminals of the system in order to cause the necessary change of state, the Increased response time or switching time of the system with inhomogeneous changes in the state of large surfaces

Method used

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  • Electrochromic device with controlled infrared reflection
  • Electrochromic device with controlled infrared reflection
  • Electrochromic device with controlled infrared reflection

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Embodiment Construction

[0037] figure 1 Shows the electrochromic device with controlled infrared reflection according to the present invention, which is especially intended to be applied to the production of rooms where the incoming heat flow needs to be adjusted to take into account the specific exposure of each window to solar radiation window.

[0038] Generally, such a device is formed by a multi-layer stack that includes a metal grid 3 that is transparent in the infrared range, an electrochromic functional system 5, and a reflective layer between a carrier substrate 1a and an opposite substrate 1b. The infrared metal layer 7 and the thermoplastic polymer sheet 9 used to laminate the device.

[0039] More specifically, the device thus includes:

[0040] -A) In the infrared range, a transparent carrier substrate 1a in the wavelength range between 1 and 30 μm, said substrate is especially based on sapphire, but can also be made of silicon, germanium, zinc sulfide, zinc selenide, Cadmium telluride (CdTe)...

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Abstract

The present invention relates to an electrochromic device, with controlled infrared reflection, especially of the electrically controllable type, comprising, between a carrier substrate (1 a) transparent in the infrared range and a countersubstrate (1 b), a multilayer stack. The device is characterized in that this multilayer stack comprises, in succession: a) a metal grid (3) transparent in the infrared range, forming a first electrode; b) an electrochromic functional system (5) comprising a layer of a first, ionic storage, electrochromic material (EC1), at least one layer (EL1, EL2) having an electrolytic function, and a layer of a second electrochromic material (EC2); c) a metallic layer (7) capable of reflecting the infrared radiation, forming a second electrode; and d) a lamination interlayer (9) made of a thermoplastic polymer.

Description

Technical field [0001] The invention relates to an electrochromic device with controlled infrared reflection, and is particularly intended to form an electrically controllable panel, especially a glass window. Background technique [0002] Known are glass windows capable of reflecting light in the infrared range. Such glass windows have been applied in various technical fields. [0003] Thus, in particular, the glass windows can be used as windows of residences, for example to ensure that the rooms of the building are thermally regulated according to their respective exposure to solar radiation. [0004] Of course, the glass window can be used in other fields, such as in the aviation field in particular, to, for example, control and adjust the infrared radiation entering through the various windows of the aircraft. [0005] Known electrochromic devices include an electrochromic material layer capable of reversibly and simultaneously inserting ions and electrons. The oxidation state o...

Claims

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Application Information

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IPC IPC(8): G02F1/153F24J2/40
CPCY02B10/20F24J2/407B32B17/10036G02F1/155G02F1/153B32B17/10788B32B17/10761B32B17/1077
Inventor E.布雷桑J-C.吉龙B.鲁瓦耶E.瓦朗坦S.迪布雷纳
Owner SAINT-GOBAIN GLASS FRANCE
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