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Flexible electrochromism electrode based on tungsten trioxide/zinc oxide and preparation method and application thereof

A technology of tungsten trioxide and flexible electricity, which is applied in nonlinear optics, instruments, optics, etc., can solve problems such as easy deformation, flexible substrates not resistant to high temperature, and limited preparation conditions, and achieve low cost, improved utilization rate, and shortened Effect of Diffusion Distance

Inactive Publication Date: 2018-01-09
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
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  • Application Information

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Problems solved by technology

However, the flexible substrate is not resistant to high temperature and is easy to deform, so its preparation conditions are greatly restricted.

Method used

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  • Flexible electrochromism electrode based on tungsten trioxide/zinc oxide and preparation method and application thereof
  • Flexible electrochromism electrode based on tungsten trioxide/zinc oxide and preparation method and application thereof
  • Flexible electrochromism electrode based on tungsten trioxide/zinc oxide and preparation method and application thereof

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preparation example Construction

[0038] Preparation of aluminum-doped zinc oxide transparent conductive layer. The invention takes aluminum-doped zinc oxide ceramic block as a target material, and uses magnetron sputtering technology to sputter aluminum-doped zinc oxide transparent conductive layer on a flexible substrate. Wherein, the mass ratio of aluminum (Al) and zinc (Zn) in the aluminum-doped zinc oxide ceramic block can be 3:97, thereby obtain aluminum (Al) and zinc ( The mass ratio of Zn) may be 3:97. Flexible substrate can choose polyethylene terephthalate (PET), polypropylene (PP), polyimide (PI) and so on. Among them, the parameters of the magnetron sputtering technology can include: the background vacuum ≤ 5 × 10 -4 Pa, the deposition temperature is room temperature, the sputtering power is 100W, the flow rate of argon gas is 5 sccm, the coating pressure is 0.5Pa, and the deposition time is 1-3 hours. Among them, the aluminum-doped zinc oxide transparent conductive layer has two functions, whic...

Embodiment 1

[0047] The preparation method of tungsten trioxide / zinc oxide nano composite material comprises the following steps:

[0048] Step 1: Cut the PET substrate into a size of 2.5cm×1.5cm, ultrasonically clean it in deionized water and ethanol for 15 minutes, and dry it at 60°C for later use;

[0049] Step 2: Using the AZO ceramic block with an aluminum doping mass fraction of 3% as the target material, put the PET substrate into the reaction chamber of the magnetron sputtering device, and pump the background vacuum to ≦5×10 -4 Pa, the sputtering power is 100W, the argon gas flow rate is 5sccm, the coating film pressure is 0.5Pa, deposit at room temperature for 2 hours, and obtain the AZO transparent conductive layer;

[0050] Step 3: 1.4874g zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O) be dissolved in 100ml deionized water, keep stirring for at least 10 minutes until the solution is uniform; 0.7009g hexamethylenetetramine ((CH 2 ) 6 N 4 ) and 0.84g of polyethyleneimine (PE...

Embodiment 2

[0057] The preparation method of the flexible electrochromic device based on tungsten trioxide / zinc oxide nanocomposite comprises the following steps: Step 1: using a 1mm thick flexible gasket, cutting the gasket into a square of 1.5cm×1.5cm, and Dig a square hole of 1.0cm×1.0cm in the middle to get an annular flexible gasket with an inner ring of 1.0cm×1.0cm and an outer ring of 1.5cm×1.5cm, and finally reserve a small hole in the thickness direction of the gasket;

[0058] Step 2: In order from top to bottom, stack the counter electrode, flexible spacer, flexible electrochromic working electrode based on tungsten trioxide / zinc oxide nanocomposite, and then seal the device with epoxy resin;

[0059] Step 3: Inject 1.0 mol / liter lithium perchlorate propylene carbonate electrolyte into the area between the working electrode and the counter electrode through the small hole of the flexible gasket, and seal it with epoxy resin after filling, and finally get Flexible electrochromic...

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Abstract

The invention relates to a flexible electrochromism electrode based on tungsten trioxide / zinc oxide and a preparation method and application thereof. The flexible electrochromism electrode comprises aflexible substrate, an aluminum-doped zinc oxide transparent conducting layer deposited on the flexible substrate, a zinc oxide nanometer template layer and a tungsten trioxide layer, wherein zinc oxide nanowires grow under induction of the aluminum-doped zinc oxide transparent conducting layer to form the zinc oxide nanometer template layer, and the tungsten trioxide layer is loaded on the zincoxide nanometer template layer and formed by tungsten troixde nanometer particles. Aluminum-doped zinc oxide (AZO) is adopted as the transparent conducting layer, AZO electrical conductivity and transmittance are high, and compared with fluorine-doped stannic oxide and tin-doped indium oxide (ITO), and aluminum and zinc in AZO are rich in resource in the natural world, free of toxin and low in cost; meanwhile, AZO can serve as a seed crystal layer of growth of the zinc oxide nanowires; the preparation technology is simplified, and production cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of functional materials and devices, and in particular relates to a flexible electrochromic electrode based on tungsten trioxide / zinc oxide, a preparation method thereof, and a flexible electrochromic device including the electrode. Background technique [0002] Electrochromic (Electrochromic) phenomenon refers to the reversible change of the material between the coloring and fading states through the injection and extraction of ions or electrons under the action of alternating voltage, which is manifested in the reversible color and transparency of the material in appearance. Variety. Electrochromic materials are widely used in smart windows, goggles, automotive anti-glare rearview mirrors, displays and other fields. Compared with liquid crystal and suspended particle dimming, electrochromic has the advantages of adjustable color, low energy consumption, and memory effect. [0003] For a long time, tradit...

Claims

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Application Information

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IPC IPC(8): G02F1/155
Inventor 李效民毕志杰高相东徐小科陈永博
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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