Electrochromic device capable of being cut at will and application

A technology of electrochromic devices and electrochromic layers, which is applied in the directions of instruments, optics, nonlinear optics, etc., can solve the problems of high production costs, increased manufacturing costs of electrochromic film devices, limitations of electrochromic devices, etc.

Active Publication Date: 2021-03-23
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing electrochromic devices that have been initially applied are still limited to traditional rigid devices, and the production cost remains high. With the continuous change of people's needs, traditional rigid devices can no longer meet people's needs. People's demand for flexible devices With greater demand, this has led to a growing market for flexible electrochromic films, flexible devic

Method used

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  • Electrochromic device capable of being cut at will and application
  • Electrochromic device capable of being cut at will and application
  • Electrochromic device capable of being cut at will and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] An electrochromic device that can be tailored arbitrarily is prepared by the following method:

[0055] Both the first transparent flexible substrate and the second transparent flexible substrate are made of PET with a thickness of 175 μm, and the materials of the first transparent electronic conductive layer and the second transparent conductive layer are both made of ITO, the thickness of the ITO layer is 100 nm, and the square resistance is 10Ω / □.

[0056] The electrochromic layer is selected from electroplated Prussian Blue (Prussian Blue, PB), and its preparation process is: the first transparent flexible substrate and the first transparent conductive layer are formed as a whole (that is, the first PET-ITO substrate (PET-ITO substrate can be The ITO layer is magnetron sputtered on the PET substrate, or the prepared PET-ITO substrate can also be purchased directly)) and ultrasonically cleaned with acetone, deionized water, and ethanol for 5 minutes for later use. ...

Embodiment 2

[0061] An electrochromic device that can be tailored arbitrarily is prepared by the following method:

[0062] The first transparent flexible substrate and the second transparent flexible substrate are made of PET with a thickness of 175 μm, the first transparent electronic conductive layer and the second transparent conductive layer are made of ITO, the thickness of the ITO layer is 100nm, and the square resistance is 10Ω / □ .

[0063] The electrochromic layer is made of electroplated PANI (polyaniline), and its preparation process is as follows: the PET-ITO substrate is ultrasonically cleaned with acetone, deionized water, and ethanol for 5 minutes respectively. Configure the plating solution, which includes 100mM aniline and 1M H 2 SO 4 . Use the PET-ITO substrate as the working electrode, a 1 square centimeter platinum sheet as the counter electrode, and Ag / AgCl as the reference electrode, apply +2.0v at room temperature, electroplate for 45s, gently rinse the film with ...

Embodiment 3

[0068] An electrochromic device that can be tailored arbitrarily is prepared by the following method:

[0069] Both the first transparent flexible substrate and the second transparent flexible substrate are made of PET with a thickness of 175 μm, the materials of the first transparent electronic conductive layer and the second transparent conductive layer are made of ITO, the thickness of the ITO layer is 100 nm, and the square resistance is 10Ω / □ .

[0070] Magnetron sputtered WO 3 , the preparation process is as follows: put the PET-ITO substrate into the loading chamber of the magnetron sputtering equipment, use ions to bombard the transparent film substrate to eliminate static electricity, vacuumize after sealing, and then transport the PET-ITO substrate to The sputtering chamber is deposited by magnetron sputtering to obtain WO 3 layer as an electronic color-changing layer; the target used in magnetron sputtering equipment is tungsten target, DC / RF power supply is used ...

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Abstract

The invention discloses an electrochromic device capable of being cut at will and application. The electrochromic device comprises a first transparent flexible substrate, a first transparent electronic conductive layer, an electrochromic layer, an electrolyte, an ion storage layer, a second transparent electronic conductive layer and a second transparent flexible substrate which are stacked in sequence, wherein the electrolyte can be automatically cured when meeting air and/or moisture so as to have an automatic packaging function. Compared with an electrochromic device prepared from solid electrolyte, the electrochromic device provided by the invention has shorter response time and better reliability, greatly reduces the risk of liquid leakage, and can be cut at will to be applied to different occasions.

Description

technical field [0001] The invention belongs to the field of electrochromic materials and devices, in particular to an electrochromic device that can be cut arbitrarily and its application. Background technique [0002] Electrochromism is the use of organic color-changing materials and / or inorganic color-changing materials under the action of alternating high and low or positive and negative external electric fields, by injecting or extracting charged ions or electrons, so that the coloring state of low transmittance and the achromatic color of high transmittance The special phenomenon of reversible changes between states is manifested in the principle of reversible changes in color and transparency in terms of appearance performance. Electrochromic materials have the characteristics of controllable structure, rich colors, low cost, and low energy consumption. They are mainly used in construction, automobiles, electronic instruments and other products. They can adjust and co...

Claims

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Application Information

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IPC IPC(8): G02F1/1514C08L67/08C08K3/24
CPCG02F1/1514C08K3/16C08L67/08G02F2001/164G02F1/1525G02F2202/36G02F1/1506G02F1/1523G02F1/1533G02F1/157
Inventor 杨诚任汐
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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