Solar cell production process

A technology of solar cell and production process, applied in the field of solar energy, can solve the problems of not conforming to the interests of enterprises, environmental pollution, increase the production and manufacturing cost of solar cells, etc., and achieve the improvement of etching method, reduction of production cost and improvement of cleaning method. Effect

Inactive Publication Date: 2018-06-15
WENZHOU SAILAFU ENERGY
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Problems solved by technology

[0004] Solar cells are a way for human beings to utilize solar energy, and during the production process of solar cells, a large amount of waste liquid and various damaged products will be

Method used

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  • Solar cell production process

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] see figure 1 , a solar cell production process, the production process comprises the following steps:

[0028] A. To make polysilicon;

[0029] B. Making silicon anchors from polysilicon;

[0030] C, cutting the silicon anchor into silicon wafers;

[0031] D. Detect silicon wafers;

[0032] E. Surface cleaning and velvet making;

[0033] F. Etching and back polishing;

[0034] G. Screen printing;

[0035] H, sintering and coating reflective film;...

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Abstract

The invention discloses a solar cell production process. The production process comprises the following steps: A, manufacturing polycrystalline silicon; B, making the polycrystalline silicon into a silicon ingot; C, cutting the silicon ingot into a silicon wafer; D, detecting the silicon wafer; E, carrying out the surface cleaning and texturing; F, etching and back polishing; G, performing silk-screen printing; H, sintering and plating a reflecting film; and I, detecting and packaging. According to the invention, the production process is adopted, all wastes in the whole production process canbe fully utilized, no waste is discharged, environment-friendly and pollution-free production can be realized, and various generated waste liquid can be used for recycling and treating scrapped failures and unqualified solar cells, the cleaning mode and the etching mode of the silicon wafer are improved, the technological process is effectively shortened, the required raw materials are easy to obtain, the production cost of the solar cell is reduced, and the benefits of the enterprise are met.

Description

technical field [0001] The invention relates to the technical field of solar energy, in particular to a production process of solar cells. Background technique [0002] Solar energy refers to the thermal radiation energy of the sun. Its main manifestation is the sun’s rays, which are often called solar rays. In modern times, it is generally used to generate electricity or provide energy for water heaters. Humans also know how to use sunlight to dry objects and use it as a method of making food, such as making salt and drying salted fish. With the decline of fossil fuels, solar energy has become an important part of human energy use and has been continuously developed. There are two ways to use solar energy: photothermal conversion and photoelectric conversion. Solar power generation is a new type of renewable energy. In a broad sense, solar energy also includes wind energy, chemical energy, water energy, etc. on the earth. Solar energy is produced by hydrogen atoms inside th...

Claims

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Application Information

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IPC IPC(8): H01L31/18
CPCH01L31/1804Y02E10/547Y02P70/50
Inventor 孙显强陈德超李莉花
Owner WENZHOU SAILAFU ENERGY
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