Method for preparing organic composite WO3 electrochomeric films

An electrochromic and thin film technology, applied in the field of organic composite WO3 electrochromic thin film preparation, can solve the problems of short response time, long response time, single color, etc., and achieve short response time, low price and good environmental stability Effect

Inactive Publication Date: 2010-01-27
SHAANXI UNIV OF SCI & TECH
View PDF0 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The light absorption change of organic electrochromic materials comes from oxidation-reduction reactions. Its response time is short (up to femtosecond level), rich in color, high in contrast, easy to carry out molecular design, and it can maintain the color changing effect after power off, and has a memory effect. However, its stability is poor and its lif

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1: 1) First, add ammonium metatungstate and polyethylene glycol with a relative molecular mass of 400 to 6000 into deionized water at a molar ratio of 1:2, and stir at 60°C to form a precursor sol, wherein The mass ratio of deionized water to polyethylene glycol is 1:4;

[0012] 2) Next, get the ITO glass substrate and use deionized water, 98% sulfuric acid, isopropanol, deionized water to ultrasonically clean successively, and finally use N 2 Blow dry, immerse the ITO glass substrate in the precursor sol and let it stand for 10 minutes, then transfer it to a 130°C oven to dry for 30 minutes, and then calcinate at 400°C for 3 hours to prepare mesoporous WO on the ITO glass substrate. 3 film;

[0013] 3) Then, aniline and o-phenylenediamine are added into hydrochloric acid aqueous solution at a molar ratio of 1:1, stirred and dissolved to form a mixed solution with an aniline concentration of 0.1 mol / L and a hydrochloric acid concentration of 1 mol / L;

[0014] ...

Embodiment 2

[0015] Example 2: 1) First, add ammonium metatungstate and polyethylene glycol with a relative molecular mass of 400 to 6000 into deionized water at a molar ratio of 1:1, and stir at 80°C to form a precursor sol, wherein The mass ratio of deionized water to polyethylene glycol is 1:5;

[0016] 2) Next, get the ITO glass substrate and use deionized water, 98% sulfuric acid, isopropanol, deionized water to ultrasonically clean successively, and finally use N 2 Blow dry, immerse the ITO glass substrate in the precursor sol and let it stand for 8 minutes, then transfer it to a 120°C oven to dry for 60 minutes, and then calcinate at 480°C for 2 hours to prepare mesoporous WO on the ITO glass substrate. 3 film;

[0017] 3) Then, add aniline and o-phenylenediamine into aqueous hydrochloric acid solution in a molar ratio of 1:0.8, stir and dissolve to prepare a mixed solution with aniline concentration of 0.2mol / L and hydrochloric acid concentration of 0.5mol / L;

[0018] 4) Finally,...

Embodiment 3

[0019] Example 3: 1) First, ammonium metatungstate and polyethylene glycol with a relative molecular mass of 400-6000 were added to deionized water at a molar ratio of 1:0.5, and stirred at 65°C to form a precursor sol, wherein The mass ratio of deionized water to polyethylene glycol is 1: 4.5;

[0020] 2) Next, get the ITO glass substrate and use deionized water, 98% sulfuric acid, isopropanol, deionized water to ultrasonically clean successively, and finally use N 2 Blow dry, immerse the ITO glass substrate in the precursor sol and let it stand for 5 minutes, then transfer it to a 125°C oven to dry for 45 minutes, and then calcinate at 420°C for 2.5 hours to prepare mesoporous WO on the ITO glass substrate. 3 film;

[0021] 3) Then, aniline and o-phenylenediamine were added into hydrochloric acid aqueous solution at a molar ratio of 1:0.5, stirred and dissolved to prepare a mixed solution with an aniline concentration of 0.2 mol / L and a hydrochloric acid concentration of 0....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for preparing organic composite WO3 electrochomeric films. The method comprises the following steps: firstly, adding ammonium para-tungstate and polyethylene glycol to deionized water to obtain precursor sol; soaking ITO (indium tin oxide) glass substrates to the precursor sol, taking the ITO glass substrates out, drying and calcining to obtain mesoporous WO3 films on the ITO glass substrates; adding aniline and o-phenylenediamine to a hydrochloric acid solution, and stirring until the aniline and o-phenylenediamine dissolve, so as to obtain a mixed solution; putting the ITO glass into the mixed solution, then adding ammonium persulfate to the mixed solution, and pulling the ITO glass out after the polymerization reaction is completely conducted; and subjecting the ITO glass to deionized water washing and alcohol washing and holding at a room temperature to obtain the organic composite WO3 electrochomeric films. The organic composite WO3 electrochomeric films prepared by the invention are characterized by using porous WO3 films as substrates and poly(aniline/o-phenylenediamine) as an organic layer, for the WO3 film is the inorganic electrochomeric material with the best performance in the prior art and has the advantages of stable performance and long service life, while the poly(aniline/o-phenylenediamine) film has the advantages of short response time and good cyclic reversibility.

Description

technical field [0001] The invention relates to a preparation method of an electrochromic film, in particular to an organic composite WO 3 Preparation method of electrochromic thin film. Background technique [0002] According to the different conditions that lead to discoloration, the color-changing materials can be divided into electrochromic materials, thermochromic materials, photochromic materials, aerochromic materials, and the like. The so-called electrochromism refers to the stable and reversible change of the color or transparency of the material under the action of an applied voltage or electric field. Electrochromic film has the advantages of low working voltage, low energy consumption, no visual restriction, memory function, wide working range, energy saving and environmental protection, and easy large-scale production. It has a wide range of applications in the fields of display devices, dimming glass, and information storage. Application prospects. Electroch...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C03C17/42G02F1/15C09K9/00
Inventor 王秀峰伍媛婷
Owner SHAANXI UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap