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Ultrafast-response overcharge-prevention electrochromic device and preparation method thereof

An electrochromic device and electrochromic layer technology, applied in instruments, nonlinear optics, optics, etc., can solve the problems of low coloring efficiency, weak high-voltage bearing capacity, slow response speed, etc. Insulation ability, the effect of preventing electric leakage

Active Publication Date: 2020-02-07
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at providing a novel electrochromic device with ultra-fast response and anti-overcharge and a preparation method thereof for the problems of slow response speed, weak high-voltage bearing capacity, and low coloring efficiency of the electrochromic smart window in the prior art.

Method used

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  • Ultrafast-response overcharge-prevention electrochromic device and preparation method thereof
  • Ultrafast-response overcharge-prevention electrochromic device and preparation method thereof
  • Ultrafast-response overcharge-prevention electrochromic device and preparation method thereof

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preparation example Construction

[0048] The present invention also provides a method for preparing a novel electrochromic device with ultra-fast response and anti-overcharge, comprising the following steps: depositing an inorganic electrochromic layer and an electron blocking layer on the surface of the second transparent electrode in sequence; An electromechanical layer; an ion conducting layer is prepared on the surface of the organic electrochromic layer; finally, a first transparent electrode is deposited on the surface of the ion conducting layer.

[0049] The preparation of the inorganic electrochromic layer and the electron blocking layer can adopt the magnetron sputtering method. Organic electrochromic layers can be obtained by evaporation. Resin-based ion transport layers can be obtained by screen printing or vacuum infusion. The first and second transparent electrodes can be obtained by spin coating or magnetron sputtering.

[0050] The above electrochromic device can be applied in electrochromic ...

Embodiment 1

[0058] First, the commercially available ITO transparent conductive glass is used as the substrate. After ultrasonically cleaning the substrate with acetone, ethanol, and deionized water for 20 minutes, fix it on the substrate tray with high-temperature tape, put it into the sample chamber, turn on the mechanical pump to pump it below 5 Pa, open the baffle valve, and send it to a vacuum ( background vacuum) to reach 10 -4 In the sputtering chamber below Pa. The inorganic electrochromic layer and electron blocking layer are prepared by continuous deposition on its surface. Through the magnetron sputtering method, metal tungsten is used as the target, the sputtering gas is argon and oxygen, the total pressure is 2.0Pa, the oxygen partial pressure is 6%, the distance between the target and the substrate is 15cm, and the initial substrate temperature is room temperature , the DC power applied to the target is 70W or the power density is 1.54W / cm 2 , the deposition time is 30 mi...

Embodiment 2

[0060] First, the commercially available ITO transparent conductive glass is used as the substrate. After ultrasonically cleaning the substrate with acetone, ethanol, and deionized water for 10 minutes, fix it on the substrate tray with high-temperature tape, put it into the sample chamber, turn on the mechanical pump to pump it below 5 Pa, open the baffle valve, and send it into the vacuum (background vacuum) to reach 10 -4 In the sputtering chamber below Pa. The inorganic electrochromic layer and electron blocking layer are prepared by continuous deposition on its surface. Through the magnetron sputtering method, metal tungsten is used as the target, the sputtering gas is argon and oxygen, the total pressure is 2.0Pa, the oxygen partial pressure is 6%, the distance between the target and the substrate is 15cm, and the initial substrate temperature is room temperature , the DC power applied to the target is 70W or the power density is 1.54W / cm 2 , the deposition time is 30...

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Abstract

The invention discloses an ultrafast-response overcharge-prevention electrochromic device and a preparation method thereof. The ultrafast-response overcharge-prevention electrochromic device comprisesa first transparent electrode, an ionic conduction layer, an organic electrochromic layer, an inorganic electrochromic layer and a second transparent electrode which are arranged in a sequentially laminated way. The ultrafast-response overcharge-prevention electrochromic device has the following beneficial effects that (1) the ionic conduction layer has the great pore diameter and is provided with many pore passages and facilitates positive ion transmission, so that the response speed of the device is accelerated; (2) the cooperative action of a plurality of positive ions is realized in the electrochromic process of the electrochromic device, so that the device has very high regulation capability; (3) in the ultrafast-response overcharge-prevention electrochromic device, a resin layer perse has good insulation capability, so that the electricity leakage can be prevented without adding an electron blocking layer; and (4) the wetting performance of a solid-liquid interface is better than that of solid-solid interface contact, so that the steric hindrance between interfaces is reduced, and the very high coloring efficiency is realized.

Description

technical field [0001] The invention relates to the technical field of chemical material synthesis and functional materials, in particular to a novel electrochromic device with ultra-fast response and anti-overcharge and its application field. Background technique [0002] Energy is an important basis for maintaining the sustainable development of the national economy and ensuring the material living standards of the people. Nowadays, problems such as energy shortage and environmental pollution are becoming more and more serious. While developing new energy sources, scientists are also trying to find ways to save energy and reduce consumption. Buildings are one of the main places where human beings carry out production and living activities. In the total energy consumption of human production and life, building energy consumption accounts for a large proportion. consumption, accounting for more than 75% of the total building energy consumption. The energy consumption of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/153
CPCG02F1/153
Inventor 黄爱彬邵泽伟赵书文包山虎金平实
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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