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Method for preparing vanadium dioxide film through inorganic sol-gel method

A technology of vanadium dioxide and inorganic sol, which is applied in the field of vanadium dioxide film materials prepared by inorganic sol-gel method, can solve the problems of high price and unsuitability for practical application, achieve low cost, facilitate large-area preparation, and reduce costs Effect

Inactive Publication Date: 2018-11-02
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is relatively less toxic, it is expensive and not suitable for practical applications

Method used

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  • Method for preparing vanadium dioxide film through inorganic sol-gel method
  • Method for preparing vanadium dioxide film through inorganic sol-gel method
  • Method for preparing vanadium dioxide film through inorganic sol-gel method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of precursor: Weigh 5g of V 2 o 5 Powder, first pour it into an agate mortar for full grinding to make the particles more refined. Then pour it into a small crucible, put it into a muffle furnace and heat it up to 820°C to melt it, keep it warm for 30 minutes, quickly take it out and pour it into 200ml deionized water and stir it quickly, wait until it is completely dissolved and dispersed, and wrap it with a plastic wrap Seal it and let it age.

[0031] (2) Cleaning of the substrate: Put the quartz glass sheet in acetone and absolute ethanol for 30 minutes, then put it in dilute hydrochloric acid solution for ultrasonic cleaning for 1 hour, rinse it with deionized water after taking it out, and dry it with nitrogen spare.

[0032] (3) Coating by pulling method: select the sol obtained in the above step (1), and coat with a pulling machine. Set the pulling speed to 2000 μm / s, the dipping time to 100s, and the residence time to 100s. After pulling on...

Embodiment 2

[0036] Precursor preparation: Weigh 5 g of V 2 o 5 , 1.4394 g of MoO 3 (mixed with 1 at.% molybdenum) powder, first pour it into an agate mortar for full grinding, so that the particles are finer and mixed evenly. Then pour it into a small crucible, put it into a muffle furnace and heat it up to 820°C to melt it, keep it warm for 30 minutes, quickly take it out and pour it into 200ml deionized water and stir it quickly, wait until it is completely dissolved and dispersed, and wrap it with a plastic wrap Seal it and let it age.

[0037] Subsequent cleaning of the substrate, pull method coating, and annealing treatment are the same as those in Embodiment 1, and will not be repeated here.

[0038] image 3 It is the relationship diagram of the resistance of the molybdenum-doped vanadium dioxide thin film obtained in Example 2 as a function of temperature. It can be seen from the figure that the resistance at room temperature is about 810KΩ, and then, as the temperature increas...

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Abstract

The invention discloses a method for preparing a vanadium dioxide film through an inorganic sol-gel method. The method comprises the following steps that (1) a precursor is prepared; (2) a substrate is cleaned; (3) film coating is conducted through a lifting method; and (4) annealing treatment is conducted, specifically, a quartz glass sheet coated with the film is put into a tubular furnace, thetubular furnace is internally vacuumized firstly, then temperature-rising annealing treatment is conducted, and thus the vanadium dioxide thermochromic film is obtained. The required cost of the method is low, precursor raw materials are easy to obtain, the preparation process is simple and easy to carry out, technical repeatability is good, and mass production is easy.

Description

technical field [0001] The invention relates to a metal oxide thin film material, in particular to a method for preparing a vanadium dioxide thin film material by an inorganic sol-gel method. Background technique [0002] With the rapid development of social economy, people's requirements for living conditions are getting higher and higher, which in turn promotes the vigorous development of the construction industry. According to statistics, the proportion of building energy consumption to the total energy consumption of the society has reached 27.8%. Among them, the energy dissipation of doors and windows accounts for about 2 / 3 of the total energy consumption of buildings, and the energy lost through glass accounts for 80% of the energy loss of doors and windows. Therefore, the research and development of high-performance energy-saving glass is of great significance to building energy conservation and even the development of the global low-carbon economy. [0003] Function...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/12
CPCC23C18/1216C23C18/1254C23C18/1295
Inventor 党媛媛张政左德堂黄金栋刘俊成
Owner TIANJIN POLYTECHNIC UNIV
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