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Three-dimensional movable smart window based on vanadium dioxide film curl structure and its preparation method

A technology of vanadium dioxide and smart windows, which is applied in the field of smart windows, can solve problems such as the bottleneck of sunlight modulation rate, and achieve the effect of improving sunlight modulation ability, obvious improvement, and simple preparation method

Active Publication Date: 2022-03-18
FUDAN UNIV
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Problems solved by technology

These structures are limited to two-dimensional planes, and the modulation rate of sunlight has reached a bottleneck

Method used

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  • Three-dimensional movable smart window based on vanadium dioxide film curl structure and its preparation method
  • Three-dimensional movable smart window based on vanadium dioxide film curl structure and its preparation method

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Embodiment Construction

[0031] The preparation method and effect of the single-layer vanadium dioxide curled structure smart window will be described in detail below in conjunction with the accompanying drawings. The following examples are used to illustrate the present invention, but not to limit the content of the present invention.

[0032] "Fabrication of Smart Windows Based on Transparent Curled Vanadium Dioxide Thin Film Arrays"

[0033] (1) Take a 1 cm × 1 cm quartz plate as the substrate, ultrasonically clean it with acetone, ethanol, and deionized water for ten minutes, and dry it in a nitrogen stream.

[0034] (2) On the cleaned quartz wafer substrate, a vanadium dioxide film is deposited by magnetron sputtering. The magnetron sputtering equipment can adopt PVD75 type magnetron sputtering equipment produced by Kurt J. Lesker Company. The target material is a metal vanadium target, the RF power supply is 200W, the total sputtering time is 1200s, and the ratio of oxygen and argon is kept at...

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Abstract

The invention belongs to the technical field of smart windows, and specifically relates to a three-dimensional movable smart window based on a vanadium dioxide film curl structure and a preparation method thereof. The smart window structure of the present invention includes: a quartz glass substrate with a flat surface, and a tubular structure array formed on the substrate by curling a vanadium dioxide film; each tubular structure can work independently; It has the ability to control sunlight. The smart light control method of the smart window is: at room temperature, the curled vanadium dioxide film makes the curled area completely transparent to quartz, which improves the light transmittance; at high temperature, the curled vanadium dioxide The curvature becomes smaller until it is completely flattened on the quartz surface, and then reattached to the substrate to form a planar vanadium dioxide film. While improving the light transmittance at room temperature, the present invention keeps the infrared limiting ability at high temperature basically unchanged, thereby improving the sunlight modulation ability of the intelligent window. The preparation method is simple, the cost is low, and large-scale production is possible.

Description

technical field [0001] The invention belongs to the technical field of smart windows, and in particular relates to a three-dimensional movable smart window based on a vanadium dioxide film curl structure and a preparation method thereof. Background technique [0002] With the trend of global warming and the increasingly serious shortage of resources, sustainable and green development, reducing energy consumption, and efficient and rational use of resources have become the focus of attention of various countries. According to the data, nearly 30% of China's total energy consumption comes from the energy loss of the building itself, and in the total energy consumption of the building, the heat dissipation of glass doors and windows accounts for 50% of it. In order to reduce energy waste, researchers focus on the windows of buildings. In modern skyscrapers, windows almost wrap the entire surface of the building and undertake the daily energy exchange (including heat convection ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E06B3/67C23C14/35C23C14/08
CPCE06B3/6722C23C14/35C23C14/083
Inventor 梅永丰李星
Owner FUDAN UNIV
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