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Crystalline silicon solar cell main grid electrode paste for spraying and preparation method thereof

A technology for solar cells and busbar electrodes, applied to conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, circuits, etc., can solve the problems of reducing slurry, affecting conductive performance, and not suitable for spraying processes, etc. Achieve the effects of saving dosage, simple preparation method and easy large-scale production

Inactive Publication Date: 2018-11-30
苏州柏特瑞新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now there is not much room to reduce the amount of paste by screen printing
The busbar spraying process can effectively save the amount of silver paste, but the spraying has high requirements for the paste, and the pastes currently on the market are not suitable for the spraying process due to their high viscosity.
Simply diluting the existing paste will affect the conductivity

Method used

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  • Crystalline silicon solar cell main grid electrode paste for spraying and preparation method thereof

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Effect test

Embodiment 1

[0022] This embodiment provides a crystalline silicon solar cell main grid electrode paste for spraying, which consists of 68 parts of silver powder, 1 part of glass binder, 28 parts of organic binder, Prepared by mixing 0.9 parts of thixotropic additives, 0.1 parts of coupling agent and 2 parts of diluent; wherein, the glass binder consists of 0.55 parts of PbO, 0.20 parts of ZnO, 0.15 parts of B 2 o 3 , 0.02 copies of In 2 o 3 , 0.03 parts of SiO 2 , 0.02 parts of Bi 2 o 3 , 0.03 parts of ZrO 2 Prepared by mixing; the organic binder consists of 2.24 parts of polyamide resin, 0.84 parts of ethyl cellulose, 0.84 parts of polyethylene glycol, 18.48 parts of butyl carbitol, 2.8 parts of PEG-40 Prepared by mixing hydrogenated castor oil and 2.8 parts of terpineol.

Embodiment 2

[0024] This embodiment provides a crystalline silicon solar cell main grid electrode paste for spraying, which consists of 63 parts of silver powder, 3 parts of glass binder, 30 parts of organic binder, Prepared by mixing 0.5 parts of thixotropic additive, 0.5 parts of coupling agent and 3 parts of diluent; wherein, the glass binder is composed of 1.50 parts of PbO, 0.75 parts of ZnO, 0.60 parts of B 2 o 3 , 0.03 copies of In 2 o 3 , 0.03 parts of SiO 2 , 0.03 parts of Bi 2 o 3 , 0.06 parts of ZrO 2 Prepared by mixing; the organic binder is prepared by mixing 3 parts of polyamide resin, 1.5 parts of ethyl cellulose, 1.5 parts of polyethylene glycol, and 24 parts of PEG-40 hydrogenated castor oil.

Embodiment 3

[0026] This embodiment provides a crystalline silicon solar cell main grid electrode paste for spraying, which consists of 60 parts of silver powder, 4 parts of glass binder, 31 parts of organic binder, Prepared by mixing 1 part of thixotropic additive, 0.5 part of coupling agent and 3.5 parts of diluent; wherein, the glass binder consists of 2.00 parts of PbO, 1.00 parts of ZnO, 0.72 parts of B 2 o 3 , 0.04 copies of In 2 o 3 , 0.08 parts of SiO 2 , 0.04 parts of Bi 2 o 3 , 0.12 parts of ZrO 2 Mix and prepare; Described organic binder is by the polyamide resin of 3.41 parts, the ethyl cellulose of 1.24 parts, the polyethylene glycol of 1.24 parts, the butyl carbitol of 6.51 parts, the terpineol of 18.6 parts Prepared by mixing.

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Abstract

The invention relates to a crystalline silicon solar cell main grid electrode paste for spraying and a preparation method thereof. The paste is prepared from silver powder, a glass binder, an organicbinder, a thixotropic auxiliary agent, a coupling agent and a diluent in a mixed mode. The preparation method comprises the following steps of 1, weighing the silver powder, the glass binder, the organic binder, the thixotropic auxiliary agent, the coupling agent and the diluent based on parts; and 2, performing mixing on the silver powder, glass powder and the organic binder to be grounded to beuniform and free of particles, and then adding the thixotropic auxiliary agent, the coupling agent and the diluent thereto, performing uniform stirring and completing preparation of the crystalline silicon solar cell main grid electrode paste for spraying. By virtue of the paste and the preparation method thereof, the requirement for preparing a crystalline silicon solar cell main grid electrode in spraying mode by using spraying equipment can be met, the use amount of the precious metal silver is reduced, and the conversion efficiency of the cell is ensured not to be influenced; and meanwhile, the preparation method is simple and large-scale production can be realized easily.

Description

technical field [0001] The invention relates to the field of crystalline silicon solar cell spray coating slurry, in particular to a crystalline silicon solar cell main grid electrode slurry for spray coating and a preparation method thereof. Background technique [0002] With the rapid growth of the world economy's demand for energy, the consumption of fossil energy is increasing, while the reserves of fossil energy are decreasing, and may be completely exhausted in the next two hundred years. The rise of nuclear energy has alleviated the energy crisis to a certain extent, but there are huge hidden dangers in the use of nuclear energy. There have been many serious nuclear leakage accidents in the world, causing huge harm, which warns that it is imperative for human beings to develop clean and pollution-free new energy sources. As an inexhaustible clean and non-polluting energy source, sunlight has caused an upsurge in human research on obtaining solar energy. [0003] Sin...

Claims

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Application Information

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IPC IPC(8): H01B1/22H01L31/0224H01B13/00
CPCH01B1/22H01B13/00H01L31/022425Y02E10/50
Inventor 白少勇魏艳彪刘盼盼
Owner 苏州柏特瑞新材料有限公司
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