A t single crystal solar cell sheet texturing process

A technology of solar cells and cells, applied in sustainable manufacturing/processing, circuits, photovoltaic power generation, etc., can solve problems such as high cost, increased production cost, and unstable texturing effect of single crystal solar cells. Ease, cost-effectiveness, and the effect of reducing subsequent flushing costs

Inactive Publication Date: 2018-12-28
安徽英发三友新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current texturing liquid has an unstable texturing effect on monocrystalline solar cells, and after use, it requires high-cost sewage treatment, which leads to an increase in production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A monocrystalline solar cell texturing process, the process steps are as follows:

[0024] (1-a) Prepare the raw materials of the texturing liquid. The parts by mass of the components of the raw materials of the texturing liquid are: deionized water: 50 parts, alkaline dispersant: 10 parts, polyethylene glycol: 11 parts, aldehyde Substance: 7 parts, nickel powder: 7 parts and activator: 4 parts, inject deionized water into the texturing tank, heat up to 75°C, add alkaline dispersant, stir evenly and keep warm for 45min; the alkaline dispersant It is sodium orthophosphate; the aldehyde is propionaldehyde; the active agent is a chain compound containing succinimide;

[0025] (1-b) Add aldehydes and stir for 15 minutes, then add polyethylene glycol, stir evenly and raise the temperature to 90°C, and keep warm for 45 minutes;

[0026] (1-c) Add nickel powder and active agent, stir evenly and let it stand for 2 hours to complete the preparation of texturing solution;

[00...

Embodiment 2

[0030] A monocrystalline solar cell texturing process, the process steps are as follows:

[0031] (1-a) Prepare the raw materials of the texturing liquid. The parts by mass of the components of the raw materials for the texturing liquid are: deionized water: 25 parts, alkaline dispersant: 5 parts, polyethylene glycol: 7 parts, aldehyde Substances: 5 parts, nickel powder: 3 parts and active agent: 2 parts, pour deionized water into the texturing tank, heat up to 65°C, add alkaline dispersant, stir evenly and keep warm for 20 minutes; the alkaline dispersant It is sodium hexametaphosphate; the aldehyde is acetaldehyde; the active agent is a chain compound containing siloxane;

[0032] (1-b) Add aldehydes and stir for 10 minutes, then add polyethylene glycol, stir evenly and raise the temperature to 78°C, keep warm for 30 minutes;

[0033] (1-c) Add nickel powder and active agent, stir evenly and let it stand for 1 hour to complete the preparation of texturing solution;

[0034...

Embodiment 3

[0037] A monocrystalline solar cell texturing process, the process steps are as follows:

[0038] (1-a) Prepare the raw materials of the texturing liquid. The parts by mass of the components of the raw materials of the texturing liquid are: deionized water: 40 parts, alkaline dispersant 8 parts, polyethylene glycol: 9 parts, aldehydes Substance: 6 parts, nickel powder: 5 parts and active agent: 3 parts, pour deionized water into the texture tank, heat up to 70°C, add alkaline dispersant, stir evenly and keep warm for 40min; the alkaline dispersant is A mixture of sodium hexametaphosphate and sodium orthophosphate; the aldehyde is propionaldehyde; the active agent is a chain compound containing siloxane;

[0039] (1-b) Add aldehydes and stir for 12 minutes, then add polyethylene glycol, stir evenly and heat up to 88°C, keep warm for 40 minutes;

[0040] (1-c) Add nickel powder and active agent, stir evenly and let it stand for 1 hour to complete the preparation of texturing so...

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PUM

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Abstract

A single crystal solar cell sheet pile making process includes such step as preparing raw material of texturing liquid, including deionized wat, alkaline dispersant, polyethylene glycol, aldehyde, nickel powder and activating agent, and preparing texturing liquid; preparing battery sheet cleaning liquid to clean the battery sheet; texturing the battery sheet pre-treated with the texturing liquid.The raw material of the texturing liquid and the cleaning liquid of the battery sheet provided by the invention are easy to prepare and the cost is applicable. The method of pre-treatment and cleaningin advance is adopted for cashmere making, the cashmere making effect is uniform and stable, and the subsequent washing after cashmere making is more convenient and effective, which greatly reduces the follow-up washing cost and improves the benefit of the enterprise.

Description

technical field [0001] The invention belongs to the field of battery manufacturing, and in particular relates to a monocrystalline solar cell sheet texturing process. Background technique [0002] At present, the texturing process adopted by monocrystalline solar cells is roughly: alkali texturing, spray washing, flowing water washing, pickling, spray washing, hot water washing and thermal drying. Alkali texturing is an important part of the process. Texture quality has an extremely important influence. When the monocrystalline solar cells are put into the texturing solution, because the alkali has anisotropic corrosion characteristics on the monocrystalline silicon, that is, the corrosion rate of the alkali is different in different crystal orientations of the silicon wafer, thus forming unevenness on the surface of the silicon wafer. state, that is, pyramid-shaped suede. Pyramid textured surface has the characteristics of large light-receiving area and low reflectivity, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/0236
CPCH01L31/02363H01L31/1804Y02E10/547Y02P70/50
Inventor 狄宝忠张华潘国凤杨明娟祝秋陈林阳
Owner 安徽英发三友新能源科技有限公司
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