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Broadband double-layer anti-reflection coating capable of improving efficiency of solar cell and preparation method thereof

A solar cell and broadband technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as poor anti-reflection effect, and achieve the effects of firm bonding, improved efficiency, and improved preparation methods.

Active Publication Date: 2020-12-04
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, to propose a wide-band double-layer anti-reflection coating and its preparation method to improve the efficiency of solar cells, and to solve the problem of poor anti-reflection effect of single-layer anti-reflection coatings in the full band of visible light in the prior art. technical problem

Method used

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  • Broadband double-layer anti-reflection coating capable of improving efficiency of solar cell and preparation method thereof
  • Broadband double-layer anti-reflection coating capable of improving efficiency of solar cell and preparation method thereof
  • Broadband double-layer anti-reflection coating capable of improving efficiency of solar cell and preparation method thereof

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preparation example Construction

[0025] see figure 1 , the second aspect of the present invention provides a kind of preparation method of the broadband double-layer anti-reflection coating that improves solar cell efficiency, comprises the following steps:

[0026] S1: Apply the bottom anti-reflection coating on the surface of the substrate, and form the bottom anti-reflection coating after curing;

[0027] S2: Coating the top anti-reflection coating on the surface of the bottom anti-reflection coating, and obtaining a broadband double-layer anti-reflection coating for improving the efficiency of solar cells after curing.

[0028] In this embodiment, the curing temperature is 40-60°C, preferably 45-55°C; the curing time is 30-60s, preferably 30-40s.

[0029] In this method, the substrates used are glass, silicon wafers, optical devices and the like.

[0030] The preparation method of the broadband double-layer antireflection coating for improving solar cell efficiency provided by the second aspect of the p...

Embodiment 1

[0033] Synthesis of bottom anti-reflection coating: take 2mL of isopropanol and 50 μL of hydrochloric acid with a molar concentration of 0.1mol / L, then add 200 μL of TEOS, and stir at room temperature for 2 hours to obtain the bottom anti-reflection coating. During this process, the concentration of linear silica polymer in the resulting primer anti-reflection coating was 4.6 wt%.

[0034] Synthesis of the bottom anti-reflection coating: the modified mesoporous silica dispersion and the fluorinated silica polymer solution are mixed in a volume ratio of 2:1 to obtain the bottom anti-reflection coating; wherein,

[0035] The modified mesoporous silica dispersion was obtained by the following steps: 15 g of CTAB solution with a mass concentration of 2.5 wt % and 600 μL of TEA solution with a mass concentration of 10 wt % were added to a 30 mL round bottom flask, magnetically stirred and mixed, while heating in an oil bath to 70°C, add 1.2mLTEOS, stir the reaction at 70°C for 1h, ...

Embodiment 2

[0039] Synthesis of bottom anti-reflection coating: take 2mL of isopropanol and 40 μL of hydrochloric acid with a molar concentration of 0.1mol / L, then add 100 μL of TEOS, and stir at room temperature for 1 hour to obtain the bottom anti-reflection coating. During this process, the concentration of the linear silica polymer in the resulting primer anti-reflection coating was 2.3 wt%.

[0040] Synthesis of the bottom anti-reflection coating: the modified mesoporous silica dispersion and the fluorinated silica polymer solution are mixed in a volume ratio of 4:1 to obtain the bottom anti-reflection coating; wherein,

[0041] The modified mesoporous silica dispersion was obtained by the following steps: 8 g of CTAB solution with a mass concentration of 2.5 wt % and 400 μL of TEA solution with a mass concentration of 10 wt % were added to a 30 mL round-bottomed flask, magnetically stirred and mixed, while heating in an oil bath After reaching 65°C, add 1.2mLTEOS, stir the reaction ...

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Abstract

The invention discloses a broadband double-layer anti-reflection coating for improving the efficiency of a solar cell and a preparation method of the broadband double-layer anti-reflection coating. The broadband double-layer anti-reflection coating capable of improving the efficiency of the solar cell comprises a bottom anti-reflection coating and a top anti-reflection coating, the bottom anti-reflection coating is formed by curing a bottom anti-reflection coating containing a linear silicon dioxide polymer; and the top anti-reflection coating is formed by curing a top anti-reflection coatingformed by mixing a modified mesoporous silica dispersion liquid and a fluorinated silica polymer solution. The broadband double-layer anti-reflection coating capable of improving the solar cell efficiency can achieve a better anti-reflection effect in visible light full wave bands, can be firmly bonded with a glass substrate, has better hydrophobicity and durability, and can effectively improve the efficiency of various different solar cell devices. The preparation method of the broadband double-layer anti-reflection coating capable of improving the efficiency of the solar cell is simple and good in repeatability.

Description

technical field [0001] The invention relates to the technical field of optical coating preparation, in particular to a broadband double-layer anti-reflection coating for improving solar cell efficiency and a preparation method thereof. Background technique [0002] As the most promising way to utilize clean energy, solar cells have been widely studied in the fields of scientific research and industrial production. In addition to silicon solar cells with the highest degree of commercialization, organic cells and perovskite cells have also attracted widespread attention due to their rapid development. Among them, how to improve the energy conversion efficiency of solar cells is the first problem for scientists. [0003] On the one hand, scientists start from chemical molecular design to find new active layer materials or adopt interface modification to reduce defects or suppress energy loss in devices. Although there have been some encouraging reports, the loss of light refl...

Claims

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Application Information

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IPC IPC(8): H01L31/0216H01L31/18
CPCH01L31/02168H01L31/18Y02E10/50
Inventor 王涛王卉刘丹
Owner WUHAN UNIV OF TECH
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