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Solar cell reworking sheet coating technology

A solar cell and process technology, which is applied to circuits, electrical components, sustainable manufacturing/processing, etc., can solve the problems of prone to dark etching, dirty chips or uneven diffusion of coatings, and obvious differences in polycrystalline silicon wafers. Achieve the effect of reducing variance and improving appearance yield

Inactive Publication Date: 2016-11-09
ALTUSVIA ENERGY TAICANG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the industrial production of the traditional preparation process of crystalline silicon solar cells, due to the operation of personnel or equipment abnormalities during the process, dirty chips or coatings and uneven diffusion are often produced. These silicon chips are defective products and usually need to be remanufactured. cashmere rework
Polysilicon wafers usually use HF and HNO 3 Mixed acid etching process, after rework and texturing, the crystal flower difference of polycrystalline silicon wafers will become more obvious, and etching dark lines are prone to appear
These appearance phenomena cannot be completely eliminated in the follow-up conventional process, and the finally formed cells with poor appearance can only be treated as unqualified products

Method used

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  • Solar cell reworking sheet coating technology
  • Solar cell reworking sheet coating technology
  • Solar cell reworking sheet coating technology

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The coating experiment was carried out using the process parameters in Table 1 below.

[0027] Table 1

[0028]

Embodiment 2

[0030] The coating experiment was carried out using the process parameters in Table 2 below.

[0031] Table 2

[0032]

Embodiment 3

[0034] The coating experiment was carried out using the process parameters in Table 3 below.

[0035] table 3

[0036]

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PUM

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Abstract

A solar cell reworking sheet coating technology employs a bilayer film technology. The refractive index of a first layer film is higher than the refractive index of a second layer film, and the thickness of the first layer film is 25-40mm. The technology provided by the invention can effectively reduce the proportion of bad cell appearances caused by re-flocking.

Description

technical field [0001] The invention belongs to the technical field of photovoltaics, in particular to a coating process for reworked solar cell sheets. 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. Among the effective utilization of solar energy, solar photovoltaic utilization is the fastest-growing and most dynamic research field in recent years, and it is one of the most watched projects. To this end, people have researched and developed solar cells. The production of solar cells is mainly based on semiconductor materials, and its working principle is to use photoelectric materials to absorb light energy and generate photoelectric conversion reactions. According to the different materials used, it can be divided into: silicon solar cells; cells made of inorganic salts such as gallium arsenide III-V compounds, cadmium tellurid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18
CPCH01L31/18Y02P70/50
Inventor 陈文浩王冕奚彬刘仁中
Owner ALTUSVIA ENERGY TAICANG
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