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Hydrophobic and spectrally selective solar cell glass and manufacturing method thereof

A spectral selection and solar cell technology, applied in the field of solar cell glass and its production, can solve problems such as corrosion of electrodes, delamination, impact on component performance and service life, and achieve improved conversion output power, high conversion output power, and realization of The effect of the anti-reflection effect

Active Publication Date: 2016-07-06
QINHUANGDAO GLASS IND RES & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the EVA adhesive film used for packaging crystalline silicon solar cell modules is composed of a copolymer of ethylene and vinyl acetate, which has good comprehensive performance and is currently the most commonly used packaging material in photovoltaic modules, but the chemical structure of EVA itself is unstable. The aging resistance is relatively poor. Although the prior art has added various additives such as ultraviolet absorbers, ultraviolet light stabilizers, antioxidants and crosslinking agents to improve its aging resistance in the EVA film, there are still many Insufficient, yellowing, delamination, air bubbles, corrosion of electrodes and other phenomena often occur during use, which seriously affects the performance and service life of components

Method used

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  • Hydrophobic and spectrally selective solar cell glass and manufacturing method thereof
  • Hydrophobic and spectrally selective solar cell glass and manufacturing method thereof
  • Hydrophobic and spectrally selective solar cell glass and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Such as figure 2 As shown, a glass for solar cells with hydrophobic effect and spectral selectivity, in which:

[0054] Low-iron ultra-white embossed glass substrate 1 has a thickness of 3.20mm and a transmittance of 91.40%;

[0055] The spectrum selective film layer 4 is obtained from the ingredients in Example 1, the film layer porosity is less than 10%, and the film layer refractive index n 2 =1.90, film thickness d 2 =75nm;

[0056] The hydrophobic film layer 5 is obtained from the ingredients in Example 1. The particle diameter is about 15-40 nm, the porosity of the film layer is less than 10%, and the refractive index of the film layer is n 1 =1.50, film thickness d 1 =95nm.

[0057] In the manufacturing method of this embodiment, the temperature in step 3) is 400°C; the temperature in step 5) is 200°C.

[0058] The glass for solar cells prepared by the above steps has a water contact angle of 118° (32° before coating) and a spectral transmittance of 20.7% (before coating...

Embodiment 2

[0060] A kind of glass for solar cell with hydrophobic effect and spectral selectivity, its structure is also like figure 2 As shown, where:

[0061] Low-iron ultra-white embossed glass substrate 1 has a thickness of 3.24mm and a transmittance of 91.52%;

[0062] The spectrum selective film layer 4 is composed of the components in Example 2, the porosity of the film layer is less than 10%, and the refractive index of the film layer is n 2 =1.81, film thickness d 2 =75nm;

[0063] The hydrophobic film layer 5 is composed of the components in Example 2, the particle diameter is about 15-40 nm, the porosity of the film layer is less than 10%, and the refractive index of the film layer is n 1 =1.45, film thickness d 1 =95nm.

[0064] The manufacturing method is the same as in Example 1, wherein the temperature in step 3) is 410°C; the temperature in step 5) is 210°C.

[0065] The solar cell glass produced by the above steps has a surface water contact angle of 113° (32° before coating), a...

Embodiment 3

[0067] Such as figure 2 As shown, a glass for solar cells with hydrophobic effect and spectral selectivity, in which:

[0068] Low-iron ultra-white embossed glass substrate 1 has a thickness of 3.22mm and a transmittance of 91.50%;

[0069] The spectrum selective film layer 4 is obtained from the components in Example 3, the film layer porosity is less than 10%, and the film layer refractive index n 2 =1.85, film thickness d 2 =75nm;

[0070] The hydrophobic film layer 5 is obtained from the ingredients in Example 3. The particle diameter is about 15-40 nm, the porosity of the film layer is less than 10%, and the refractive index of the film layer is n 1 =1.48, film thickness d 1 =95nm.

[0071] The manufacturing method is the same as in Example 1, wherein the temperature in step 3) is 420°C; the temperature in step 5) is 230°C.

[0072] The glass for solar cells prepared through the above steps has a water contact angle of 116° on the surface of the hydrophobic film layer 5 (32° befo...

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Abstract

The invention discloses hydrophobic and spectrum selective glass for a solar cell and a manufacturing method of the glass. The manufacturing method of the glass specifically comprises the steps that a glass body serves as a substrate, and a spectrum selective film layer and a hydrophobic film layer are arranged on one face of the substrate from bottom to top in sequence, wherein the spectrum selective film layer is used for absorbing the spectrum with the wave length equal to or shorter than 380 nm, and the hydrophobic film layer is used for reducing adsorption. By means of the glass, adsorption of dust, stains, vapor and other matter can be effectively reduced, the surface of the glass can be kept clean and dry for a long time, and high conversion output power of a crystal silicon solar cell module can be kept for a long time. In addition, optical protection can be well provided for an EVA film in the crystal silicon solar cell module, and the service life of the module is obviously prolonged. The manufacturing method is suitable for large-area film coating of encapsulating glass for the solar cell, the raw material cost and the manufacturing cost are low, and the production efficiency is high.

Description

Technical field [0001] The present invention relates to the technical field of glass for solar cells, in particular to a glass for solar cells with hydrophobic effect and spectral selectivity and a manufacturing method thereof. Background technique [0002] With the increasing global energy crisis, crystalline silicon solar cells, as a clean new energy source, are favored by the majority of scientific and technological workers and the energy industry, and their development prospects and business opportunities are huge. Since crystalline silicon, the main body of crystalline silicon solar power technology, cannot be exposed to the external environment for a long time, solar cell glass is currently one of the best packaging materials for protecting crystalline silicon. With the development of crystalline silicon solar technology, the current solar conversion efficiency has reached more than 20%, basically reaching the bottleneck. Further improving its conversion efficiency is the i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/054H01L31/048H01L31/18
CPCH01L31/048H01L31/18Y02E10/52Y02P70/50
Inventor 李军明李勇赵恩录陈福王志平张文玲高炜冯建业黄俏续芯如
Owner QINHUANGDAO GLASS IND RES & DESIGN INST
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