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Front silver paste for high-contact and high-adhesion PERC single crystal solar cell and preparation method

A technology of solar cells and high adhesion, applied in the manufacture of cables/conductors, equipment for manufacturing conductive/semiconductive layers, circuits, etc., to achieve good printability, solve high series resistance, and solve the effects of cell degradation

Inactive Publication Date: 2020-03-17
上海银浆科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Although there are different high-efficiency battery technology routes, for photovoltaic manufacturers who want to expand production at this stage, they all need to consider a question: whether to follow the traditional technology upgrade or technological innovation

Method used

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  • Front silver paste for high-contact and high-adhesion PERC single crystal solar cell and preparation method
  • Front silver paste for high-contact and high-adhesion PERC single crystal solar cell and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The front silver paste for a high-contact and high-adhesion PERC monocrystalline solar cell of this embodiment is made of the following raw materials in mass percentage: 30% of silver powder with a particle size of 700nm, 59.5% of silver powder with a particle size of 1-2 μm, glass powder 2.8%, organic vehicle 6.5%, inorganic additives 1.2%.

[0033] The inorganic additives are cerium dioxide and nano silver powder.

[0034] The organic vehicle is made of the following raw materials in mass percentage: Dow STD-4 ethyl cellulose 7%, acrylic resin 3%, dimethyl phthalate 10%, propylene glycol methyl ether acetate 3%, propylene glycol methyl ether 5% %, butyl carbitol 15%, butyl carbitol acetate 20%, alcohol ester dodeca 10%, oleic acid 2%, TDO 6%, polyamide wax 10%, silicone oil 5%, esterification modification Rosin 4%.

[0035] The preparation method of silver paste for PERC crystalline silicon solar cells with high contact and high adhesion comprises the following step...

Embodiment 2

[0049] The front silver paste for a high-contact and high-adhesion PERC monocrystalline solar cell of this embodiment is made of the following raw materials in mass percentage: 20% of silver powder with a particle size of 700nm, 69.8% of silver powder with a particle size of 1-2 μm, glass powder 2.5%, organic vehicle 6.6%, inorganic additives 1.1%.

[0050] The inorganic additives are nano-zinc powder and nano-silver powder.

[0051] The organic vehicle is made of the following raw materials in mass percentage: Dow STD-4 ethyl cellulose 7%, acrylic resin 3%, dimethyl phthalate 10%, propylene glycol methyl ether acetate 4%, propylene glycol methyl ether 5% %, butyl carbitol 15%, butyl carbitol acetate 20%, alcohol ester dodeca 10%, oleic acid 2%, TDO 5%, polyamide wax 10%, silicone oil 4%, esterification modification Rosin 5%.

[0052] The preparation method of the front silver paste for the high-contact and high-adhesion PERC monocrystalline solar cell comprises the followin...

Embodiment 3

[0059] The front silver paste for a high-contact and high-adhesion PERC monocrystalline solar cell of this embodiment is made of the following raw materials in mass percentages: 25% of silver powder with a particle size of 700nm, 64.8% of silver powder with a particle size of 1-2 μm, glass powder 2.6%, organic vehicle 6.6%, inorganic additives 1.0%.

[0060] The inorganic additives are nano palladium powder and nano silver powder.

[0061] The organic vehicle is made of the following raw materials in mass percentage: Dow STD-4 ethyl cellulose 8%, acrylic resin 2%, dimethyl phthalate 8%, propylene glycol methyl ether acetate 4%, propylene glycol methyl ether 6% %, butyl carbitol 12%, butyl carbitol acetate 22%, alcohol ester dodeca 10%, oleic acid 2%, TDO 5%, polyamide wax 12%, silicone oil 5%, esterification modification Rosin 4%.

[0062] The preparation method of the front silver paste for the high-contact and high-adhesion PERC monocrystalline solar cell comprises the fol...

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Abstract

The invention discloses front silver paste for a high-contact and high-adhesion PERC single crystal solar cell and a preparation method. The silver paste is prepared from the following raw materials in percentage by mass: 85-92% of silver powder, 1-5% of glass powder, 5-12% of an organic carrier and 0.1-2% of an inorganic auxiliary agent. The high-contact high-adhesion silver paste for the PERC single crystal solar cell has good series resistance and printability, and solves the problems of quick printing output and high productivity of a cell factory; meanwhile, the slurry is printed on the front surface of the PERC single crystal solar cell and is dried and sintered; the paste has excellent adhesive force and wear resistance, solves the problem of friction scratch after front silver paste is sintered, overcomes the defect caused by mutual friction of battery parts in the transportation process, and provides a good guarantee for the service life of the battery parts at the assembly end.

Description

technical field [0001] The invention belongs to the technical field of silver paste for solar cells, and in particular relates to a front silver paste for PERC monocrystalline solar cells with high contact and high adhesion and a preparation method. Background technique [0002] Solar energy is an inexhaustible renewable energy source for human beings, and it is also a clean energy source that does not produce any environmental pollution. However, as the competition in the crystalline silicon solar cell industry continues to intensify, the application of solar photovoltaic market will present a wide-ranging and diversified trend, and the cell technology will also tend to be diversified. [0003] Although there are different high-efficiency battery technology routes, for photovoltaic manufacturers who want to expand production at this stage, they all need to consider a question: whether to follow the tradition for technological upgrades or technological innovations. Among va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01B13/00H01L31/0224
CPCH01B1/22H01B13/0026H01L31/022425Y02E10/50
Inventor 刘洁陈小龙王亮乔亮
Owner 上海银浆科技有限公司
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