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Copper electroplating solution for heterojunction solar cell and preparation method of copper electroplating solution

A technology for solar cells and copper electroplating solution, which is applied in the field of metal surface treatment, can solve the problems of brittle coating, unsatisfactory coating quality, large coating stress, etc., and achieves the effects of small deposition stress, easy cracking, and improvement of cathode polarization.

Inactive Publication Date: 2020-12-25
GUANGZHOU SANFU NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing copper electroplating solution for heterojunction solar cells has problems such as high stress, brittle coating, and unsatisfactory coating quality in the coating after electroplating.

Method used

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  • Copper electroplating solution for heterojunction solar cell and preparation method of copper electroplating solution
  • Copper electroplating solution for heterojunction solar cell and preparation method of copper electroplating solution

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Effect test

Embodiment 1

[0031] Embodiment 1. A copper electroplating solution for heterojunction solar cells

[0032] The copper electroplating solution for heterojunction solar cells includes copper salt, complexing agent, conductive salt, crystal refiner, stress reliever, brightener and pH stabilizer; the content of the copper salt is 28g / L, so The content of the complexing agent is 52g / L, the content of the conductive salt is 40g / L, the content of the crystal refiner is 2g / L, the content of the stress relief agent is 1g / L, the bright The content of the agent is 0.4g / L, and the content of the pH stabilizer is 35g / L; the copper salt is copper sulfate; the complexing agent is potassium citrate; the conductive salt is sodium chloride; The crystal refiner consists of saccharin, sodium propynyl sulfonate and polyvinyl alcohol in a mass ratio of 8:6:2; the stress reliever consists of 2-amino-6-mercaptopurine, 1,4-butynediol and The polyethyleneimine is composed of a mass ratio of 11:7:1; the brightener ...

Embodiment 2

[0039] Embodiment 2. A copper electroplating solution for heterojunction solar cells

[0040] The copper electroplating solution for heterojunction solar cells includes copper salt, complexing agent, conductive salt, crystal refiner, stress reliever, brightener and pH stabilizer; the content of the copper salt is 35g / L, so The content of the complexing agent is 60g / L, the content of the conductive salt is 46g / L, the content of the crystal refiner is 4g / L, the content of the stress relief agent is 3g / L, the bright The content of agent is 1g / L, and the content of described pH stabilizer is 45g / L; Described copper salt is cupric chloride; Described complexing agent is made up of citric acid and potassium tartrate by mass ratio 1:4; Described The conductive salt is sodium chloride; the crystal refiner is composed of saccharin, sodium propynyl sulfonate and polyvinyl alcohol in a mass ratio of 10:4:1; the stress relief agent is composed of 2-amino-6-mercaptopurine , 1,4-butynediol...

Embodiment 3

[0047] Embodiment 3. A copper electroplating solution for heterojunction solar cells

[0048] The copper electroplating solution for heterojunction solar cells includes copper salt, complexing agent, conductive salt, crystal refiner, stress reliever, brightener and pH stabilizer; the content of the copper salt is 33g / L, so The content of the complexing agent is 54g / L, the content of the conductive salt is 45g / L, the content of the crystal refiner is 3g / L, the content of the stress relief agent is 2g / L, the bright The content of agent is 0.7g / L, and the content of described pH stabilizer is 38g / L; Described copper salt is copper citrate; Described complexing agent is made up of citric acid and tartaric acid by mass ratio 2:7; Described The conductive salt is sodium chloride; the crystal refiner is composed of saccharin, sodium propynyl sulfonate and polyvinyl alcohol in a mass ratio of 10:5:1; the brightener is composed of nicotinic acid and phenyl dithiopropane sulfonate Sodi...

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Abstract

The invention belongs to the technical field of metal surface treatment, and particularly relates to a copper electroplating solution for a heterojunction solar cell and a preparation method of the copper electroplating solution. The copper electroplating solution for the heterojunction solar cell contains copper salt, a complexing agent, conductive salt, a crystallization refiner, a destressing agent, a brightening agent and a pH stabilizer, wherein the crystallization refiner is prepared from saccharin, sodium propynylsulfonate and polyvinyl alcohol in the mass ratio of (8-10):(4-6):(1-2), and the destressing agent is prepared from 2-amino-6-mercaptopurine, 1,4-butynediol and polyethyleneimine in the mass ratio of (11-13):(4-7):1. After the heterojunction solar cell is electroplated by adopting the copper electroplating solution, the deposition stress of an obtained copper-plated film is small, and the reliability of a plated part is remarkably improved; and the copper-plated film obtained after the heterojunction solar cell is electroplated by adopting the copper electroplating solution is uniform, compact and bright, and the quality of the plated layer is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to a copper electroplating solution for heterojunction solar cells and a preparation method thereof. Background technique [0002] Since entering the 21st century, the world's industry has developed rapidly, and the earth is undergoing rapid changes. With the development of the economy, the standard of living is gradually improving, and life is becoming more and more comfortable and fast. But development has come at the cost of energy consumption at an alarming rate. We are consuming the limited non-renewable energy on the earth every day, mainly fossil energy such as oil, coal and natural gas. These fossil energy sources are essentially a part of the energy radiated by the sun to the earth tens of thousands of years ago or even longer, stored in ancient plants, and evolved into energy deposits on the earth today through vicissitudes of change. After t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/38
CPCC25D3/38
Inventor 田志斌詹益腾邓正平陈维速谢飞凤
Owner GUANGZHOU SANFU NEW MATERIALS TECH
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