Method for reducing light attenuation of PERC solar cell

A technology of solar cells and light-induced attenuation, which is applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as difficult industrialization, difficulty in large-scale application, and limited number of cells, so as to improve light-induced attenuation and improve photoelectricity. The effect of conversion efficiency

Inactive Publication Date: 2017-02-15
ZHEJIANG ASTRONERGY
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Problems solved by technology

However, the method of light injection combined with heating requires continuous illumination of the cells, and each light source can only process a single cell at the same time, which makes industrialization difficult and costly; the method of electric injection combined with heating takes 30 minutes~ 180min, it takes a long time, and the number of cells that can be processed by each group is limited, and there are difficulties in large-scale application

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  • Method for reducing light attenuation of PERC solar cell
  • Method for reducing light attenuation of PERC solar cell

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Embodiment Construction

[0024] The following disclosure provides many different embodiments or examples for implementing different structures of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted from the present invention to avoid unnecessarily limiting the present invention.

[0025] refer to figure 1 , figure 1 Shown is a sintering furnace for reducing the light-induced attenuation of a PERC solar cell provided by the present invention, ...

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Abstract

The invention discloses a sintering furnace capable of reducing light attenuation of a PERC solar cell. The sintering furnace is composed at least ten temperature zones distributed in sequence. The temperature of the first temperature zone to the third temperature zone is 300-400 DEG C. The temperature of the fourth temperature zone to the seventh temperature zone is 400-700 DEG C. The temperature of the eighth temperature zone to the ninth temperature zone is 800-950 DEG C. The temperature of the temperature zones behind the ninth temperature zone is 400-600 DEG C. By means of the sintering furnace, LID of the prepared PERC solar cell can be greatly reduced, efficiency of the cell is improved, and production cost is reduced.

Description

technical field [0001] The invention belongs to the field of solar cell manufacturing, and in particular relates to a method for reducing light-induced attenuation of a PERC solar cell. Background technique [0002] The solar cell products made of boron-doped P-type silicon wafers are the mainstream products in the photovoltaic industry at present. The fatal weakness of P-type solar cells is that the Light Induced Degradation (LID) is relatively large. Light-induced attenuation refers to the phenomenon that the cell efficiency of crystalline silicon solar cells decreases after being illuminated. Especially in recent years, the LID of PERC cells prepared with boron-doped P-type silicon is as high as 6-9%. Therefore, it is urgent to improve the LID of PERC through various methods. [0003] It is generally believed that the main reason for the photo-induced attenuation of crystalline silicon solar cells is the recombination of boron and oxygen. Photogenerated current-carrying...

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Application Information

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IPC IPC(8): F27B9/24H01L31/18
CPCF27B9/243F27M2003/04H01L31/1804Y02E10/547Y02P70/50
Inventor 权微娟单伟王仕鹏黄海燕陆川
Owner ZHEJIANG ASTRONERGY
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