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Preparation method of a transparent and fast-response flexible electrochromic film

A fast-response, flexible electrical technology, applied in the plating of superimposed layers, ion implantation plating, coating, etc., can solve the problems of harsh test conditions, fractured substrate, separation, etc., to achieve short response time, wide discoloration range, Strong binding effect

Active Publication Date: 2017-06-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that the existing equipment for preparing flexible electrochromic films is expensive, the test conditions are harsh and cumbersome, and the flexible electrochromic films are prone to strain, fracture and separation from the substrate after being stressed, and provide a transparent Preparation method of fast-response flexible electrochromic film

Method used

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  • Preparation method of a transparent and fast-response flexible electrochromic film
  • Preparation method of a transparent and fast-response flexible electrochromic film
  • Preparation method of a transparent and fast-response flexible electrochromic film

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specific Embodiment approach 1

[0036] Specific Embodiment 1: This embodiment is based on the preparation method of a transparent fast-response flexible electrochromic film is completed according to the following steps:

[0037] 1. Ultrasonically clean the flexible substrate in acetone, methanol and ultrapure water for 20-30 minutes respectively, and then dry it at a temperature of 40°C-60°C for 10h-15h to obtain a clean flexible substrate;

[0038]The flexible substrate described in step 1 is a PET substrate covered with EVA glue with a thickness of 20nm to 100nm;

[0039] 2. Prepare the Ag layer: Sputter an Ag deposition layer with a thickness of 10nm to 50nm on the surface of the EVA glue on a clean flexible substrate by magnetron sputtering to obtain a PET substrate with an Ag layer deposited on the surface;

[0040] The parameters of the magnetron sputtering method described in step 2 are as follows: the target material is an Ag target, the sputtering type is DC sputtering, the target-base distance is 1...

specific Embodiment approach 2

[0061] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the parameters of the magnetron sputtering method described in step 2 are as follows: the target material is an Ag target, the sputtering type is DC sputtering, and the target-based The distance is 15 cm, the gas flow is 5 sccm of argon, the deposition temperature is room temperature, the deposition pressure is 2 Pa, the sputtering power is 20 W, and the deposition time is 40 s. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0062] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the parameters of the magnetron sputtering method described in step 2 are as follows: the target material is an Ag target, and the sputtering type is DC sputtering , the target-base distance is 15cm, the gas flow rate is 5sccm argon, the deposition temperature is room temperature, the deposition pressure is 3Pa, the sputtering power is 20W, and the deposition time is 40s. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a method for preparing a transparent and fast-response flexible electrochromic film, which relates to a method for preparing an electrochromic material. The purpose of the present invention is to solve the problems of expensive equipment for preparing flexible electrochromic films, harsh and tedious test conditions and the problems that the flexible electrochromic films are prone to strain, fracture and separation from the substrate after being stressed. Preparation method: 1. Prepare a clean flexible substrate; 2. Prepare an Ag layer; 3. Prepare a mixed solution B; 4. Prepare H 2 WO 4 ·H 2 O / PEDOT thin films to obtain transparent and fast-response flexible electrochromic films. The transparent fast-response flexible electrochromic film obtained by the invention has good electrical conductivity, short response time, 2s-4s fading time, and 3s-5s coloring time. The invention can obtain a transparent and quick-response flexible electrochromic film.

Description

technical field [0001] The invention relates to a preparation method of an electrochromic material. Background technique [0002] With the continuous advancement of technology, people gradually have a demand for wearable smart electronic products. Wearable products require materials with a certain mechanical strength that can be stretched, twisted, folded, and crumpled without performance degradation. These products are able to conform to complex non-planar surfaces, enabling applications not possible with rigid devices. Among them, electrochromic materials have high application value because they can realize color change under the control of small voltage. [0003] When an electrochromic material undergoes a redox reaction, its color can change reversibly. As a representative of electrochromic materials, tungsten trioxide (WO 3 ) has been widely studied and widely used because of its high contrast, high transparency, and good stability, especially its hydrate (WO 3 ·H ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00C23C14/35C23C14/20
Inventor 赵九蓬曲慧颖李垚侯帅
Owner HARBIN INST OF TECH
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