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La<3+>-doped TiO2 electrochromic thin film and preparation method thereof

An electrochromic and thin-film technology, applied in the direction of coating, etc., can solve the problems of electrochromic performance decline, etc., and achieve the effects of small investment in production equipment, improvement of natural light level, and simple production process

Active Publication Date: 2016-06-15
ANHUI UNIV OF SCI & TECH
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  • Claims
  • Application Information

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Problems solved by technology

However, due to (1) the electrochemical and chemical dissolution of the electrochromic film during use; (2) the accumulation of ions as charge compensation in the electrochromic film, these two main reasons make the electrochromic film There is a phenomenon of electrochromic performance decline in

Method used

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  • La&lt;3+&gt;-doped TiO2 electrochromic thin film and preparation method thereof
  • La&lt;3+&gt;-doped TiO2 electrochromic thin film and preparation method thereof
  • La&lt;3+&gt;-doped TiO2 electrochromic thin film and preparation method thereof

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Embodiment Construction

[0028] This embodiment prepares La according to the following steps 3+ doped TiO 2 Electrochromic film:

[0029] Using the sol-gel method, according to the ratio, 40 parts of absolute ethanol, 10 parts of tetrabutyl titanate, and 8 parts of acetic acid were vigorously stirred in a beaker for 1 hour to obtain a uniform and transparent light yellow precursor solution A;

[0030] Then 20 parts of absolute ethanol, 2 parts of deionized water, 3 parts of nitric acid and La 2 o 3 Stir vigorously in a beaker for 30 minutes to obtain a uniform and transparent precursor solution B;

[0031] Finally, mix the precursor solution A and the precursor solution B, continue to stir for 1h, and leave it to age for 12h to obtain La 3+ doped TiO 2 Precursor Sol.

[0032] Using the dipping-pulling method, the ITO conductive glass was immersed in La 3+ doped TiO 2 In the precursor sol, the pull coating was performed at a rate of 3mm / s. Finally, the dried coated glass is fired according to ...

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Abstract

The invention discloses a La<3+>-doped TiO2 electrochromic thin film and a preparation method thereof. The thin film is prepared from anhydrous ethanol, tetrabutyl titanate, acetic acid, deionized water, nitric acid and La2O3 as raw materials. The TiO2 thin film is doped with the La<3+>. ITO glass with the La<3+>-doped TiO2 electrochromic thin film is 70-80% in transmittance within a visible light range, and has the performance of reversible color change between coloring and discoloring under the external pressure of + / - 2V.

Description

technical field [0001] The present invention relates to a kind of novel film material, specifically a kind of La 3+ doped TiO 2 Electrochromic film. Background technique [0002] With the increasing global energy consumption, energy conservation has become one of the major themes in today's world. Over the past 30 years of reform and opening up, my country has fallen into an unsustainable situation of lack of resources, and the demand for resources is increasing. Especially in the past ten years, my country's real estate industry has developed rapidly, housing prices have skyrocketed, social conflicts have intensified, almost all cities have less and less land resources for sustainable development, and urban ecological systems have been greatly damaged. Although real estate has been developed for many years, it is still in a stage of extensive development. The awareness of building energy conservation is weak, which not only causes a lot of waste of resources in the const...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34
CPCC03C17/3417C03C2217/90C03C2218/111C03C2218/113
Inventor 徐子芳陈娟戴秀祥苏红霞
Owner ANHUI UNIV OF SCI & TECH
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