Cleaning method of texture surface making equipment for single crystal silicon

A single-crystal silicon technology, single-crystal silicon technology, applied in chemical instruments and methods, crystal growth, final product manufacturing, etc., can solve the problems of chemical liquid pollution, difficult to remove organic matter, influence of texturing additives, etc., and prolong the service life. , The effect of ensuring conversion efficiency and saving maintenance costs

Active Publication Date: 2017-02-01
YINGLI ENERGY CHINA
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Problems solved by technology

[0010] It can be seen that when maintaining the texturing equipment in the existing method, silicon powder and particles in the tank are only removed by clearing debris and washing with water, but it is difficult to remove tiny particles and organic matter sticking to the tank wall, especially some organic matter , The fine crystallization of the liquid medicine and additives has a bad influence on the additives, which will affect the texture effect of the

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  • Cleaning method of texture surface making equipment for single crystal silicon
  • Cleaning method of texture surface making equipment for single crystal silicon

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[0027] The present invention will be described in further detail below in combination with specific embodiments.

[0028] The technological process of the present invention is draining, washing with water, removing fragments, washing with water, wiping, washing with water, soaking, and washing with water. Compared with the existing cleaning method, the steps of wiping and soaking are added. To wipe, use a dust-free cloth soaked in alcohol to wipe, and the soaking solution uses a certain proportion of chemical reagents to ensure the cleaning effect and improve the cleanliness of the process tank.

[0029] The concrete operation of each cleaning step of the present invention is as follows:

[0030] (1) Drainage: Drainage of each tank;

[0031] (2) Rinse with water, rinse the tank body: ①Open the drain valve of each tank, rinse the tank body with a water gun; ;

[0032] (3) Clean up the debris: Add water to rinse and clean up the debris, use a water gun to clean up the debris ...

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Abstract

The invention discloses a cleaning method of texture surface making equipment for single crystal silicon, belonging to the technical field of solar battery preparation. The cleaning method comprises the steps: draining, water flushing, flakes removing, water flushing, wiping, water flushing, soaking and water flushing. The cleaning method of texture surface making equipment for single crystal silicon can increase the average conversion efficiency of a solar battery, prolong the maintenance period of equipment and increase the productive capacity of the equipment.

Description

technical field [0001] The invention belongs to the technical field of solar cell preparation, and in particular relates to a cleaning method for monocrystalline silicon texturing equipment. Background technique [0002] Texturing is a vital link in the production of crystalline silicon solar cells. Texturing can reduce the reflectivity of sunlight on the silicon surface, thereby increasing the light absorption rate and increasing the conversion efficiency of solar cells. The single crystal texturing equipment is generally a trough-type equipment, and the purpose of preparing the textured surface is achieved through chemical corrosion. However, after the equipment is used for a certain period of time, the corroded silicon, impurities on the silicon surface, and other organic substances will affect the etching solution, which will lead to a decrease in the final conversion efficiency of the solar cell. Therefore, regular maintenance is required to ensure that the equipment ...

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Application Information

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IPC IPC(8): C30B33/10C23G1/02H01L31/18
CPCH01L31/18C23G1/02C30B33/10Y02P70/50
Inventor 汤欢张东升寇继成李拯宇王静李青娟甄云云
Owner YINGLI ENERGY CHINA
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