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Title:
MULTICOLORED ADJUSTABLE ELECTROCHROMIC MATERIAL AND ELECTROCHROMIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/001700
Kind Code:
A1
Abstract:
A multicolored adjustable electrochromic material and an electrochromic device. The electrochromic material is made from the following raw materials: monodisperse nano-microspheres, a dispersion, and/or a light absorbing agent, wherein the monodisperse nano-microspheres are silicon dioxide microspheres or silicon dioxide-coated ferroferric oxide core-shell structured microspheres or polymeric microspheres, and the monodisperse nano-microspheres comprise nano-microspheres having one particle size or two particle sizes or more than two particle sizes. The electrochromic device comprises a photonic crystal color changing layer made of the electrochromic material, preparation is convenient, and costs are low. By using various monodisperse nano-microspheres having different particle sizes and adjusting the ratio between the monodisperse nano-microspheres having different particle sizes, a reflection spectrum of a structural color of the electrochromic device can be adjusted, and the electrochromic device exhibits highly sensitive color change characteristics at a voltage of 0-3 V, achieves color change of a full visible light range, and has low angle dependence.

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Inventors:
TIAN FENG (CN)
HUANG XIAOHUA (CN)
Application Number:
PCT/CN2023/098695
Publication Date:
January 04, 2024
Filing Date:
June 06, 2023
Export Citation:
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Assignee:
PHOMERA METAMATERIALS INC (CN)
International Classes:
C09K9/00; C09K9/02; G02F1/1516; G02F1/1523; G02F1/155
Foreign References:
CN114933894A2022-08-23
CN111045270A2020-04-21
CN103436965A2013-12-11
CN110054933A2019-07-26
Other References:
LUO YU XIA, ZHANG JIAN FEI, SUN AI HUA, CHU CHENG YI, ZHOU SHI, GUO JIAN JUN, XU GAO JIE: "Optical Properties of Silica Colloids Suspensions in Electric Field", ADVANCED MATERIALS RESEARCH (DURNTEN-ZURICH, SWITZERLAND), SCITEC PUBLICATIONS, vol. 924, 17 April 2014 (2014-04-17), pages 158 - 165, XP009552273, ISSN: 1662-8985, DOI: 10.4028/www.scientific.net/AMR.924.158
Attorney, Agent or Firm:
GUANGDONG YINGLIAN INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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