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Preparation method of electrochromic film having photonic crystal structure

A photonic crystal and electrochromic technology, applied in optics, nonlinear optics, electrolytic organic material coating, etc., can solve the problems that the irreversibility of electrochromic materials cannot be improved, reduce the solar absorption rate, etc., and achieve excellent electrochromic response performance, improved ion diffusion coefficient, and enhanced electrochromic rate

Active Publication Date: 2015-04-15
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing electrochromic materials are irreversible and cannot improve the reflectivity of the material and reduce the solar absorption rate, and propose a method for preparing an electrochromic thin film with a photonic crystal structure

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  • Preparation method of electrochromic film having photonic crystal structure
  • Preparation method of electrochromic film having photonic crystal structure

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specific Embodiment approach 1

[0019] Specific embodiment one: the preparation method of the electrochromic thin film with photonic crystal structure in this embodiment is carried out according to the following steps:

[0020] 1. Surface treatment of the substrate material: The substrate is cleaned with acetone, methanol and ultrapure water for 10 minutes to 30 minutes under the condition of ultrasonic power of 80W to 120W, and then dried. The thickness of the substrate material is 0.01mm to 1mm. ITO conductive glass, FTO conductive glass, ITO-plated polyimide substrate, silver-plated polyimide substrate, gold-plated polyimide substrate or polyester substrate;

[0021] 2. Preparation of colloidal solution: Add microspheres with a diameter of 50nm to 5μm into deionized water or ethanol solution to obtain a solution with a monodispersity of ≤5% and a concentration of 0.01% to 1% by mass, and then vibrate by ultrasonic Disperse to obtain a colloidal solution, and finally obtain a colloidal solution for templat...

specific Embodiment approach 2

[0029] Embodiment 2: This embodiment differs from Embodiment 1 in that in step 1, the substrate is cleaned with acetone, methanol and ultrapure water for 15 min to 25 min under the condition of ultrasonic power of 90W-110W. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0030] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that in step two, microspheres with a spherical diameter of 100 nm to 1 μm are added to deionized water or ethanol solution to obtain monodispersity ≤ 4%, mass percentage A solution with a concentration of 0.05% to 0.5%. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates a preparation method of an electrochromic film having a photonic crystal structure. The preparation method solves the problem that the existing electrochromic material has irreversibility so that material reflectivity is not improved and solar absorptance is not reduced. The preparation method of the electrochromic film having a photonic crystal structure comprises the following steps of 1, base material surface treatment, 2, colloidal solution preparation, 3, film-type colloidal crystal template preparation, 4, solution preparation, 5, electrode preparation and 6, film electrochemical preparation. A polyaniline photonic crystal film having an inverse opal structure and prepared by the preparation method has excellent electrochromism response performances. The preparation method can be used for the field of preparation and production of the electrochromic film having a photonic crystal structure.

Description

technical field [0001] The invention relates to a preparation method of an electrochromic thin film. Background technique [0002] Structural color, also known as physical color, is an optical effect caused by the submicroscopic structure of organisms without any pigment factors. Special optical properties arise when the surface or layer of an organism has a periodic structure. When the distance between structures with different optical properties coincides with the wavelength of visible light, white light will selectively reflect and transmit certain wavelengths on this surface, resulting in special color effects. Based on the research on structural color materials in the biological world, people have prepared nano functional materials with structural color, namely photonic crystals. [0003] Photonic crystal is a kind of material whose dielectric constant changes periodically. Because it can control the propagation of photons like a semiconductor does to electrons, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D9/02G02F1/15C08J7/00C08L79/08C08L67/00
Inventor 李垚赵九蓬尹志娟
Owner HARBIN INST OF TECH
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