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Electrochromic thin film for effectively modulating intermediate-infrared transmission rate and preparation method thereof

A technology of infrared transmittance and effective modulation, applied in the field of electrochromic film preparation, can solve the problem of difficulty in effectively modulating mid-infrared radiant heat, etc., and achieve the effect of strong mid-infrared electrochromic ability and controllable process

Inactive Publication Date: 2018-11-13
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an electrochromic film that effectively modulates the mid-infrared transmittance, an aluminum-doped zinc oxide (AZO) nano-array film, which can solve the problem that the existing electrochromic materials are difficult to effectively modulate the mid-infrared radiant heat

Method used

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Examples

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Effect test

preparation example Construction

[0029] The present invention also provides a method for preparing an electrochromic thin film capable of effectively modulating mid-infrared transmittance, the specific steps are as follows:

[0030] Step 1, prepare composite sol C containing Zn-Al element;

[0031] Step 1.1, preparing Zn-containing sol A: the preparation process is to mix benzoylacetone and absolute ethanol, stir at room temperature until it dissolves, then add zinc acetate, and stir in air at 45-60°C for 2 hours, Obtain transparent clear sol A;

[0032] Step 1.2, preparing Al-containing sol B: the preparation process is to mix aluminum isopropoxide with absolute ethanol, and stir at room temperature until it dissolves to obtain a clear sol B;

[0033] Step 1.3, mixing sol A and sol B at room temperature and stirring for 1 hour to obtain a clear composite sol C containing Zn-Al elements;

[0034] In step 1, the molar ratio of zinc acetate, aluminum isopropoxide, benzoylacetone, and dehydrated alcohol used i...

Embodiment 1

[0044] An electrochromic thin film capable of effectively modulating mid-infrared transmittance is an aluminum-doped zinc oxide (AZO) nano-array thin film, in which the lattice points are circular holes and the array is a regularly arranged hole array. The lattice point diameter is 500nm, the hole array depth is 10nm, the hole array period is 5000nm, and the modulation band is in the mid-infrared region of 2-8μm.

[0045] The preparation method of the composite film with the above structural parameters, the specific steps are as follows:

[0046]Mix 0.811g of benzoylacetone with 13.820g of absolute ethanol, stir at room temperature until it dissolves, then add 2.192g of zinc acetate, and stir in air at 60°C for 2 hours to obtain a transparent and clear sol A. 0.204g of aluminum isopropoxide was mixed with 13.820g of absolute ethanol, and stirred at room temperature until it was dissolved, and a clear sol B was obtained. Mix sol A and sol B at room temperature and stir for 1 h...

Embodiment 2

[0050] An electrochromic thin film capable of effectively modulating mid-infrared transmittance is an aluminum-doped zinc oxide (AZO) nano-array thin film, in which the lattice points are circular holes and the array is a regularly arranged hole array. The lattice point diameter is 800nm, the hole array depth is 20nm, the hole array period is 4000nm, and the modulation band is in the mid-infrared region of 2-8μm.

[0051] The preparation method of the composite film with the above structural parameters, the specific steps are as follows:

[0052] Mix 0.811g of benzoylacetone and 12.669g of absolute ethanol, stir at room temperature until it dissolves, then add 2.192g of zinc acetate, and stir in air at 56°C for 2 hours to obtain a transparent and clear sol A. 0.163g of aluminum isopropoxide was mixed with 12.669g of absolute ethanol, and stirred at room temperature until it was dissolved, and a clear sol B was obtained. Mix sol A and sol B at room temperature and stir for 1 h...

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Abstract

The invention discloses an electrochromic thin film for effectively modulating intermediate-infrared transmission rate. An aluminum-doped zinc oxide nanometer array thin film has an intermediate-infrared area of which the diameter of the grid point is 500 to 2000 nm, the depth of a hole array is 10 to 50 nm, the cycle of the hole array is 1000 to 5000 nm, and the modulation wave band is 2 to 8 mum. The electrochromic thin film can solve the problem of failure to effectively modulate the intermediate-infrared radiation heat of the existing electrochromic thin film. The preparation method comprises the following steps of step 1, preparing a compound sol containing Zn-Al (zinc-aluminum) elements; step 2, lifting and drawing to prepare a gel thin film; step 3, putting an AZO light-sensing gelfilm substrate into a four-beam laser interference system to expose; step 4, putting the exposed AZO light-sensing gel film substrate into an eluting solvent to elute, and eluting to remove an unexposed part, so as to obtain an AZO gel thin film with nanometer hole array; step 5, putting the AZO gel thin film with the nanometer hole array into a muffle furnace to anneal, so as to obtain the electrochromic thin film.

Description

technical field [0001] The invention belongs to the technical field of electrochromic film preparation, and in particular relates to an electrochromic film for effectively modulating mid-infrared transmittance; the invention also relates to a preparation method of the electrochromic film for effectively modulating mid-infrared transmittance. Background technique [0002] Electrochromic material refers to a new type of intelligent material that can reversibly change between the colored state of low transmittance and the faded state of high transmittance under the action of alternating high and low or positive and negative external electric fields. core part of the window. Currently, tungsten oxide film is the most common electrochromic coating in commercially available window glass. Tungsten oxide mainly modulates the transmittance of visible (380-780nm) and near-infrared (780-2500nm) at the same time. Other traditional electrochromic materials such as Nb 2 o 5 , NiO, V ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/25
CPCC03C17/25C03C2217/24C03C2218/11
Inventor 任洋方彤赵高扬
Owner XIAN UNIV OF TECH
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