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Method for simulating texturing solution of poly-silicon solar cell piece

A solar cell and polysilicon technology, applied in the field of solar cells, can solve the problems of cost reduction, high utilization rate of square ingot silicon material, high cost of silicon material, etc., and achieve the effect of exempting the activation process

Inactive Publication Date: 2019-04-02
山东力诺太阳能电力股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rod drawing process of monocrystalline silicon is complicated, and the cost of silicon material is high; while the ingot casting process of polycrystalline silicon is simple, and the utilization rate of square ingot silicon material is high, which significantly reduces the cost. At present, more than 98% of photovoltaic cells in the international market are polysilicon solar cells

Method used

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  • Method for simulating texturing solution of poly-silicon solar cell piece
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  • Method for simulating texturing solution of poly-silicon solar cell piece

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Experimental program
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Effect test

Embodiment 1

[0035] Configure hydrofluoric acid: nitric acid: water = 50:234:170, when cooled to the reaction temperature of 7-12°, the corrosion amount of the mortar wire-cut silicon wafer after 90s is 0.1688g, as shown in the attached drawing Figure 5 shown.

Embodiment 2

[0037] Configure hydrofluoric acid: nitric acid: water = 50:234:170, when cooled to 7-12 ° reaction temperature, after adding 1.4645 g of sodium nitrite, after 90 seconds, the corrosion amount of the mortar wire-cut silicon wafer is 0.3100 g, as shown in the attached figure Figure 6 shown.

Embodiment 3

[0039] Configure hydrofluoric acid: nitric acid: water = 50:234:170, when cooled to a reaction temperature of 7-10°, the corrosion amount of diamond wire cut silicon wafers after 90s is 0.1634g.

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Abstract

The invention discloses a method for simulating a texturing solution of a poly-silicon solar cell piece. Nitrite is added into an initially-prepared texturing solution and is uniformly mixed. By the method, the texturing solution is not needed to be simulated by dummy wafer running, the production cost is reduced, the production time is shortened, and the method is suitable for industrial application on a large scale.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a method for activating a texturing solution for polycrystalline silicon solar cells. Background technique [0002] Solar energy is the most important clean and renewable energy source, and it is estimated that by 2040, the total installed capacity of solar energy will account for 15% to 20% of global power generation. According to the "Eight Measures of Photovoltaic Country" promulgated by the State Council in 2013, the installed capacity of photovoltaic power generation will reach 35GW in 2015, accounting for 2.4% of the total installed capacity. The key to large-scale utilization of solar power is to prepare low-cost, high-efficiency solar cells. The rod drawing process of monocrystalline silicon is complicated, and the cost of silicon material is high; while the ingot casting process of polycrystalline silicon is simple, and the utilization rate of square ingot silicon m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18
CPCH01L31/18H01L31/186Y02E10/50Y02P70/50
Inventor 韩玉杰刘林华任日强高君庆崔鲁飞王琦任现坤姜言森
Owner 山东力诺太阳能电力股份有限公司
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