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A kind of preparation method of all-round broadband anti-reflection film

A kind of anti-reflection film, all-round technology, applied in the coating and other directions, can solve the problems such as the inability to fully utilize the solar energy and the inability to utilize the incident light.

Active Publication Date: 2019-06-04
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With single-layer or multi-layer coating technology, at least 8% of the incident light on the surface of photovoltaic glass will be reflected and cannot be used. When it is incident at an angle of 70 degrees, the reflectivity increases to 27%, which cannot fully utilize solar energy.

Method used

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  • A kind of preparation method of all-round broadband anti-reflection film
  • A kind of preparation method of all-round broadband anti-reflection film
  • A kind of preparation method of all-round broadband anti-reflection film

Examples

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Embodiment 1

[0026] (1) Put 114mL of absolute ethanol and 7.12mL of ammonia water with a mass concentration of 28% in a beaker, stir evenly in a 30°C water bath, then add 4.0mL of tetraethyl orthosilicate dropwise, react for 6 hours and then reflux to remove ammonia to the pH of the system A value of 7 yields 50nm solid SiO 2 Particle sol, tuned SiO 2 The concentration is 1.6wt%,

[0027] 860g absolute ethanol, 36gH 2 O. 0.2 g of concentrated hydrochloric acid with a mass concentration of 37% was placed in a beaker. After stirring evenly in a water bath at 30°C, 104 g of tetraethyl orthosilicate was added dropwise, and after 6 hours of reaction, reflux to remove ammonia until the pH of the system was 7 to obtain an adhesive SiO 2 Sol,

[0028] The above binder SiO 2 Sol and solid SiO 2 Particle sol by SiO 2 Mix evenly at a molar ratio of 1:9 to obtain the underlying film A coating sol;

[0029] (2) At room temperature, dissolve 0.12g of polyacrylic acid (PAA, Mw=5000) in 6mL of amm...

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Abstract

The invention belongs to the field of optical film materials, and in particular relates to a method for preparing an all-around broadband antireflective film. The method comprises the following steps: coating through a sol-gel dip-coating method, sequentially coating five layers of SiO2 spherical films of 50nm which take polyacrylic acid as a template and have different wall thicknesses on the glass surface, stabilizing the temperature of each film layer by a constant temperature oven at the temperature of 100 DEG C for 2 hours, forming a film layer of which the wall thickness of SiO2 particles is gradually reduced on the glass surface, and performing high-temperature roasting to remove a template agent, thereby obtaining the broadband antireflective film with all-around antireflection within 350-1600nm.

Description

technical field [0001] The invention belongs to the field of optical thin film materials, and in particular relates to a preparation method of an omnidirectional broadband antireflection film. Background technique [0002] For photovoltaic or photothermal solar modules, the photoelectric conversion efficiency or photothermal conversion efficiency is very sensitive to the light transmittance requirements of sunlight. A system composed of thousands of identical solar modules, even if the absorption of sunlight increases by 1%, The impact on the power of the overall system is also huge. With single-layer or multi-layer coating technology, at least 8% of the incident light on the surface of photovoltaic glass will be reflected and cannot be used. When it is incident at an angle of 70 degrees, the reflectivity increases to 27%, which cannot fully utilize solar energy. [0003] Nowadays, global environmental problems are becoming more and more severe, non-renewable energy sources...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/34
CPCC03C17/3417C03C2217/213
Inventor 陈若愚荚桂玉王红宁钟璟刘小华
Owner CHANGZHOU UNIV
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