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Method for preparing all-solid-state electrochromic device

An electrochromic device and electrochromic layer technology, which can be used in instruments, nonlinear optics, optics, etc., can solve the problems of low coloring efficiency, short cycle discoloration life, etc., and achieve the effect of extremely high electrochemical stability.

Active Publication Date: 2017-08-22
JIANGSU FANHUA GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent and the existing all-solid-state electrochromic device use lithium ions in the electrolyte layer. This kind of lithium-ion device has a relatively short cyclic discoloration life and low coloring efficiency.

Method used

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  • Method for preparing all-solid-state electrochromic device

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preparation example Construction

[0018] The preparation method of the all-solid-state electrochromic device of the present invention, such as figure 1 As shown, the device consists of an ITO glass substrate 1, an electrochromic layer 2, an electrolyte layer 3, an ion storage layer 4 and a top layer of ITO 5 in sequence; the preparation method includes the following steps:

[0019] (1) Preparation of electrochromic layer: using clean ITO glass as substrate, metal tungsten as target, argon and oxygen as working gases, electrochromic layer was prepared by reactive magnetron sputtering method; the basic parameters are : The background vacuum is 6*10 -4 Pa, the flow ratio of argon and oxygen is 3:1, the working pressure is 2-3Pa, the sputtering power is DC 220 W, and the substrate temperature is 400°C, deposit once and obtain the first WO 3 Thin-film color-changing layer, when the substrate temperature is 200°C, deposit the second time to obtain the second WO 3 Thin-film color-changing layer, when the substrate...

Embodiment 1

[0027] The preparation method of the all-solid-state electrochromic device in this embodiment, the specific steps of the preparation method are as follows:

[0028] (1) Preparation of electrochromic layer: using clean ITO glass as substrate, metal tungsten as target, argon and oxygen as working gases, electrochromic layer was prepared by reactive magnetron sputtering method; the basic parameters are : The background vacuum is 6*10 -4 Pa, the flow ratio of argon and oxygen is 3:1, the working pressure is 2 3Pa, the sputtering power is DC 220 W, and the substrate temperature is 400°C, deposit once and obtain the first WO 3 Thin-film color-changing layer, when the substrate temperature is 200°C, deposit the second time to obtain the second WO 3 Thin-film color-changing layer, when the substrate temperature is 20°C, deposit the third time to obtain the third WO 3 Thin-film color-changing layer, and then obtain the overall cathodic electrochromic layer 2 with a thickness of 200n...

Embodiment 2

[0033] The preparation method of the all-solid-state electrochromic device in this embodiment, the specific steps of the preparation method are as follows:

[0034] (1) Preparation of electrochromic layer: using clean ITO glass as substrate, metal tungsten as target, argon and oxygen as working gases, electrochromic layer was prepared by reactive magnetron sputtering method; the basic parameters are : The background vacuum is 6*10 -4 Pa, the flow ratio of argon and oxygen is 3:1, the working pressure is 2 Pa, the sputtering power is DC 220 W, and the substrate temperature is 400°C, deposit once and obtain the first WO 3 Thin-film color-changing layer, when the substrate temperature is 200°C, deposit the second time to obtain the second WO 3 Thin-film color-changing layer, when the substrate temperature is 20°C, deposit the third time to obtain the third WO 3 Thin-film color-changing layer, and then obtain the overall cathodic electrochromic layer 2 with a thickness of 600nm...

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Abstract

The invention relates to a method for preparing an all-solid-state electrochromic device. The device comprises an ITO (Indium Tin Oxide) glass substrate, an electrochromic layer, an electrolyte layer, an ion storage layer and a top ITO layer sequentially. The preparation method comprises the following steps: (1) preparing the electrochromic layer; (2) preparing the electrolyte layer; (3) preparing the ion storage layer; (4) preparing the top ITO layer. The method disclosed by the invention has the advantages that due to the preparation method disclosed by the invention, lithium ions used in the traditional electrochromic device are replaced with aluminum-lithium double ions, and an electrochromic material and an ion storage material applicable to the aluminum-lithium ions are selected, namely a WO3 film and a NiO composite material, so that the cycle color change life of the prepared device is further greatly prolonged, and the coloring efficiency is excellent.

Description

technical field [0001] The invention belongs to the field of electrochromic devices, in particular to a preparation method of an all-solid-state electrochromic device. Background technique [0002] Electrochromism refers to the phenomenon that optical properties (reflectivity, transmittance, absorptivity, etc.) undergo a stable and reversible color change under the action of an applied electric field. Electrochromic technology has been developed for more than 40 years. Electrochromic devices (Electrochromic Device, ECD) are widely used in smart windows, It has broad application prospects in fields such as displays, spacecraft temperature control and modulation, automotive non-glare rearview mirrors, and weapons and equipment stealth. [0003] Electrochromic devices generally have a five-layer structure: a transparent conductive electrode layer, an electrochromic material layer, an electrolyte layer, an ion storage layer, and another conductive electrode layer. For example,...

Claims

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Application Information

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IPC IPC(8): G02F1/153G02F1/15
CPCG02F1/1525G02F1/153
Inventor 郭俊吉王群华刘江刁训刚吉顺青叶书兵国星
Owner JIANGSU FANHUA GLASS CO LTD
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