Solar battery packaging glass plated with three layers of anti-reflection films and preparation method thereof

A technology for solar cells and encapsulation glass, which is applied in the field of solar cell encapsulation glass coated with three-layer antireflection film and its preparation field, can solve the problems of inability to cover the visible light region, the limitation of solar energy utilization rate, etc., and achieves good chemical stability and good optical properties. performance, long service life

Inactive Publication Date: 2012-06-20
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this double-layer anti-reflection coating only has good anti-reflection properties for a single wavelength and cannot cover the entire visible light region, which greatly limits the utilization of solar energy in the visible light region.

Method used

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  • Solar battery packaging glass plated with three layers of anti-reflection films and preparation method thereof
  • Solar battery packaging glass plated with three layers of anti-reflection films and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Combine absolute ethanol, deionized water, concentrated hydrochloric acid and ethyl orthosilicate (high purity) in a molar ratio of 119.70:13.03:1.35×10 -2 : 1 was sequentially added into the reaction vessel, and then taken out after a constant temperature reaction at 30°C for 2 hours, placed in a closed glass container, and aged in a 30°C constant temperature bath for 7 days for later use. The resulting SiO 2 SiO in sol 2 The mass concentration is 1%.

[0027] Add anhydrous ethanol, deionized water, concentrated hydrochloric acid and butyl titanate to the reaction vessel in sequence at a molar ratio of 161.01:11.49:0.71:1 and 49.75:3.55:0.22:1, and react at a constant temperature at 30°C for 2 hours for later use . The resulting TiO 2 TiO in sol 2 The mass concentration is 1% and 3%.

[0028] 2) Partial SiO 2 with a mass concentration of 1% TiO 2 The sols were mixed in a mass ratio of 1:1 to obtain a composite sol, and the resulting composite sol was aged in...

Embodiment 2

[0033] 1) By the method described in Example 1, absolute ethanol, deionized water, concentrated nitric acid and ethyl tetrasilicate (high purity) were mixed in molar ratio 36.83: 4.01: 4.16×10 -3 : 1 was added to the reaction vessel to make SiO with a mass concentration of 3%. 2 Sol.

[0034] With the method described in Example 1, molar ratios of absolute ethanol, deionized water, concentrated nitric acid and butyl titanate were 49.75: 3.55: 0.22: 1 and 20.87: 1.49: 9.23 × 10 -2 : 1 to prepare mass concentrations of 3% and 6% TiO respectively 2 Sol.

[0035] 2) Partial SiO 2 with a mass concentration of 3% TiO 2 The sols were mixed at a mass ratio of 1.4:1 to prepare a composite sol, which was aged in a constant temperature tank at 30° C. for 7 days, and filtered for later use.

[0036] 3) Dip the cleaned and dried packaging glass substrate into SiO 2 -TiO 2 In the composite sol, the outer surface of the packaging glass substrate is covered with a layer of smooth compo...

Embodiment 3

[0040] 1) With the method described in Example 1, dehydrated alcohol, deionized water, concentrated nitric acid and tetraethyl orthosilicate (high purity) are mixed in molar ratio 20.52: 2.23: 2.31 * 10 -3 : 1 is added to the reaction vessel to make SiO with a mass concentration of 5%. 2 Sol.

[0041] With the method described in Example 1, molar ratios of absolute ethanol, deionized water, concentrated nitric acid and butyl titanate were 26.47: 1.89: 0.12: 1 and 9.65: 0.69: 4.27 × 10 -2 : 1 to prepare TiO with a mass concentration of 5% and 10% respectively 2 Sol.

[0042] 2) Partial SiO 2 with a mass concentration of 5% TiO 2 The sols were mixed at a mass ratio of 1:1 to prepare a composite sol, which was aged in a constant temperature bath at 30° C. for 7 days, and filtered for later use.

[0043] 3) Dip the cleaned and dried packaging glass substrate into SiO 2 -TiO 2 In the composite sol, the outer surface of the packaging glass substrate is covered with a layer of...

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Abstract

The invention discloses solar battery packaging glass plated with three layers of anti-reflection films. The solar battery packaging glass is characterized in that three layers of optical films are sequentially plated from inside to outside on the two outer surfaces of ordinary glass 1 in an overlapping way, the first layer is an SiO2 and TiO2 or ZrO2 or Ta2O5 composite film 2 with the refractive index being 1.58 to 1.85, the second layer is a TiO2 or ZrO2 or Ta2O5 film 3 with the refractive index being 1.91 to 2.52, the third layer is the SiO2 film 4 with the refractive index being 1.43 to 1.45, in addition, the average transmission rate of the packaging glass in a visible light region is higher than 98 percent, and the transmission rate reduction amplitude is lower than 1 percent after the friction for 3000 times on a friction resistance test machine. The invention also discloses a preparation method of the solar battery packaging glass. The packaging glass provided by the invention has the average transmission rate higher than 98 percent in the visible light region, so the utilization rate of the solar energy in the visible light region is furthest improved, in addition, the preparation method is simple, the operation is easy, and the industrialization is easy to realize.

Description

technical field [0001] The invention belongs to the technical field of solar cell packaging glass coated with an anti-reflection film and its preparation, and in particular relates to a solar cell packaging glass coated with a three-layer anti-reflection film and a preparation method thereof. Background technique [0002] A solar cell is an optical component that converts light energy into electrical energy. The solar cell encapsulation glass is the main component of the optical component, and its transmittance directly affects the photoelectric conversion efficiency. In order to improve the photoelectric conversion efficiency of the solar cell, the reflection of light on the glass surface of the solar cell package should be reduced as much as possible, and the transmission of light should be increased. Since the technical measure of coating anti-reflection coating on the packaging glass can effectively reduce the loss of light, it is widely used in it. In addition, in prac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34
Inventor 江波叶龙强肖波张欣向张雨露
Owner SICHUAN UNIV
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