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Solar battery front surface silver paste and preparation method therefor

A technology for solar cells and silver paste, which is applied in the manufacture of cables/conductors, circuits, electrical components, etc., can solve the problem of the need to enhance the conversion rate of light energy to electric energy, and achieve the effect of improving the conductivity, increasing the viscosity and simple components.

Inactive Publication Date: 2017-11-03
JURONG GCL SYST INTEGRATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the solder resistance and adhesion are improved, the conversion rate between light and electricity needs to be enhanced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of silver paste on the front side of a solar cell, comprising the following raw materials in parts by weight: 2 parts of graphene, 40 parts of conductive silver powder, 1 part of adhesive, 12 parts of cow dung oil, 10 parts of polypropylene alcohol, and 20 parts of ethyl acetate , 1 part of straw powder, 12 parts of sodium edetate, 1 part of antioxidant, 0.2 part of leveling agent, and 0.4 part of antiaging agent.

[0018] The adhesive is glass adhesive.

[0019] The preparation method of the cow dung oil: after the cow dung is cleaned, it is dried and pulverized, and the oil is distilled and extracted.

[0020] The preparation method of the front silver paste of the above-mentioned solar cell comprises the following steps: Step 1, weighing the raw materials, immersing the graphene in cow dung oil, freeze-drying, and grinding it for later use; Step 2, mixing conductive silver powder, polypropylene alcohol, acetic acid Ethyl ester, straw powder, sodium ethylenedi...

Embodiment 2

[0025] A kind of silver paste on the front of a solar cell, comprising the following raw materials in parts by weight: 10 parts of graphene, 54 parts of conductive silver powder, 2 parts of adhesive, 20 parts of cow dung oil, 18 parts of polypropylene alcohol, and 24 parts of ethyl acetate , 3 parts of straw powder, 22 parts of sodium edetate, 1 part of antioxidant, 0.4 part of leveling agent, and 0.5 part of antiaging agent.

[0026] The adhesive is glass adhesive.

[0027] The preparation method of the cow dung oil: after the cow dung is cleaned, it is dried and pulverized, and the oil is distilled and extracted.

[0028] The preparation method of the front silver paste of the above-mentioned solar cell comprises the following steps: Step 1, weighing the raw materials, immersing the graphene in cow dung oil, freeze-drying, and grinding it for later use; Step 2, mixing conductive silver powder, polypropylene alcohol, acetic acid Ethyl ester, straw powder, sodium ethylenediam...

Embodiment 3

[0033] A kind of silver paste on the front side of a solar cell, comprising the following raw materials in parts by weight: 2-12 parts of graphene, 40-64 parts of conductive silver powder, 1-3 parts of adhesive, 12-25 parts of cow dung oil, polypropylene alcohol 10-20 parts, 20-30 parts of ethyl acetate, 1-4 parts of straw powder, 12-24 parts of sodium edetate, 1-3 parts of antioxidant, 0.2-0.8 parts of leveling agent, 0.4 parts of anti-aging agent -0.8 parts.

[0034] The adhesive is glass adhesive.

[0035] The preparation method of the cow dung oil: after the cow dung is cleaned, it is dried and pulverized, and the oil is distilled and extracted.

[0036] The preparation method of the front silver paste of the above-mentioned solar cell comprises the following steps: Step 1, weighing the raw materials, immersing the graphene in cow dung oil, freeze-drying, and grinding it for later use; Step 2, mixing conductive silver powder, polypropylene alcohol, acetic acid Ethyl este...

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Abstract

The invention discloses a front silver paste of a solar cell and a preparation method thereof. The silver paste includes the following raw materials: graphene, conductive silver powder, adhesive, cow dung oil, polypropylene alcohol, ethyl acetate, straw powder, sodium EDTA, antioxidant, leveling agent, and anti-aging agent. Preparation method: weigh the raw materials, immerse the graphene in cow dung oil, freeze-dry it, grind it for later use; prepare conductive silver powder, polypropanol, ethyl acetate, straw powder, sodium EDTA, antioxidant, fluid After the leveling agent and the anti-aging agent are evenly mixed, put them into the ball mill, then add the spare materials and adhesives in step 1, and stir to obtain a positive silver paste. In the present invention, graphene and cow dung oil are mixed and modified to improve the electrical conductivity of the graphene. In addition, the graphene has good physical properties, can improve the compressive resistance of the cured front electrode, and reduce the damage caused by friction during the use of the solar cell. question.

Description

technical field [0001] The invention belongs to the field of solar cell electrode materials, and in particular relates to a solar cell front silver paste and a preparation method thereof. Background technique [0002] With the development of society, the consumption of energy is increasing. As an inexhaustible green energy, solar energy is very popular among people. In order to draw out the photoelectric current generated by the solar cell, positive and negative electrodes must be made on the surface of the solar cell. [0003] The Chinese patent application number 201310343935.5 discloses a front silver paste for silicon solar cells, and specifically discloses that the front silver paste is made of the following raw materials in weight percentage: organic carrier 4.8-20, silver powder 80-95, glass powder 0.1-10 , Inorganic additives 0.1-10. The silver paste improves the conversion efficiency, which can meet the performance requirements of the battery sheet, and the prod...

Claims

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Application Information

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IPC IPC(8): H01B1/22H01B1/24H01B13/00H01L31/0224
CPCH01B1/22H01B1/24H01B13/00H01L31/022425
Inventor 卞祖慧庄益春贾敏陈宁
Owner JURONG GCL SYST INTEGRATION TECH CO LTD
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