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Manufacturing process of solar cell piece

A solar cell and manufacturing process technology, applied in the field of solar energy, can solve the problems of increasing cell cost, low efficiency, cumbersome production process, etc., and achieve the effect of simplifying production process, improving production efficiency, and helping development

Inactive Publication Date: 2018-05-18
WENZHOU HAIXU SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The production process of solar cells in the prior art is relatively cumbersome and the efficiency is low, thus increasing the cost of the cells

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A process for manufacturing a solar cell, comprising the steps of:

[0027] S1. Inspection: Clean and inspect the silicon wafers to be processed, and remove unqualified silicon wafers;

[0028] S2. Texturing: put the tested qualified silicon wafers into alkaline solution for surface texturing treatment;

[0029] S3. Diffusion knot:

[0030] A1. Put the textured silicon wafer into the diffusion furnace. The temperature in the diffusion furnace is maintained at 800°C for 8 minutes. At the same time, a mixed gas of large nitrogen, oxygen and small nitrogen is introduced into the diffusion furnace. The flow rate of the small nitrogen is 3L / min, oxygen flow rate is 1L / min, maximum nitrogen flow rate is 8L / min;

[0031] A2. Raise the temperature in the diffusion furnace to 825°C, keep it warm for 10 minutes, and then feed the mixed gas of large nitrogen, oxygen and small nitrogen. The flow rate of the mixed gas is 15L / min, and the volume ratio of oxygen to the mixed gas is...

Embodiment 2

[0043] A process for manufacturing a solar cell, comprising the steps of:

[0044] S1. Inspection: Clean and inspect the silicon wafers to be processed, and remove unqualified silicon wafers;

[0045] S2. Texturing: put the tested qualified silicon wafers into alkaline solution for surface texturing treatment;

[0046] S3. Diffusion knot:

[0047] A1. Put the textured silicon wafer into the diffusion furnace. The temperature in the diffusion furnace is maintained at 805°C for 8 minutes. At the same time, a mixed gas of large nitrogen, oxygen and small nitrogen is introduced into the diffusion furnace, and the flow rate of the small nitrogen is 3.2L. / min, oxygen flow rate is 1.2L / min, maximum nitrogen flow rate is 8.5L / min;

[0048] A2. Raise the temperature in the diffusion furnace to 825°C, keep it warm for 12 minutes, and then feed the mixed gas of large nitrogen, oxygen and small nitrogen. The flow rate of the mixed gas is 18L / min, and the volume ratio of oxygen to the m...

Embodiment 3

[0060] A process for manufacturing a solar cell, comprising the steps of:

[0061] S1. Inspection: Clean and inspect the silicon wafers to be processed, and remove unqualified silicon wafers;

[0062] S2. Texturing: put the tested qualified silicon wafers into alkaline solution for surface texturing treatment;

[0063] S3. Diffusion knot:

[0064] A1. Put the textured silicon wafer into the diffusion furnace. The temperature in the diffusion furnace is maintained at 810°C for 8 minutes. At the same time, a mixed gas of large nitrogen, oxygen and small nitrogen is introduced into the diffusion furnace, and the flow rate of the small nitrogen is 3.5L. / min, oxygen flow rate is 1.4L / min, maximum nitrogen flow rate is 9L / min;

[0065]A2. Raise the temperature in the diffusion furnace to 825°C, keep it warm for 14 minutes, and then feed the mixed gas of large nitrogen, oxygen and small nitrogen. The flow rate of the mixed gas is 18L / min, and the volume ratio of oxygen to the mixe...

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Abstract

The invention relates to the technical field of solar energy, in particular to a manufacturing process of a solar cell piece. The manufacturing process comprises the following steps: s1, detecting; s2, texturing; s3, PN junction preparing; s4, phosphorosilicate glass removing; s5, coating; s6, and silk-screen printing. The manufacturing process of the novel solar cell is simplified and easy to realize. The production efficiency can be effectively improved, and the development of the solar industry is facilitated.

Description

technical field [0001] The invention relates to the technical field of solar energy, in particular to a manufacturing process of solar cells. Background technique [0002] With the rapid development of society and economy, the demand for energy is increasing day by day, the depletion of fossil energy and the pollution to the ecological environment are seriously threatening the sustainable development of society and economy. Therefore, there is an urgent need to replace it with renewable energy. As an inexhaustible and inexhaustible green renewable energy source, solar energy has received widespread attention worldwide. [0003] The principle of solar cells is mainly based on the semiconductor material silicon, and impurities are doped into the silicon crystal by means of a diffusion process: when impurities such as boron and phosphorus are doped, there will be a hole in the silicon crystal to form an n-type semiconductor; , after doping phosphorus atoms, there will be an e...

Claims

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Application Information

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IPC IPC(8): H01L31/18
CPCH01L31/1804Y02E10/547Y02P70/50
Inventor 陈德榜
Owner WENZHOU HAIXU SCI & TECH CO LTD
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