Influence of main parameters of industrial flocking on reflectivity

Solar cell silicon material

Influence of main parameters of industrial flocking on reflectivity

admin on July 15, 2022 0 Comments • Tags: #crystallinesiliconsolarcell

The parameters of industrial flocking monitoring mainly include the following: temperature, liquid medicine addition, pump flow and belt speed (the speed of silicon wafer in the flocking machine). According to the general experience in industrial production, the more obvious the surface reaction effect of silicon wafer is, the more obvious the suede will be, and … Read More

What are the steps for cleaning silicon wafers?

Solar cell silicon material

What are the steps for cleaning silicon wafers?

admin on June 11, 2022 0 Comments • Tags: #crystallinesiliconsolarcell #impuritiesinsilicon

The cleaning of silicon wafers is the final finish of processing silicon wafers, but in fact, it is involved in the grinding and cutting process of silicon wafers. After removing the light, the polished silicon wafers also need to be dewaxed and cleaned. The cleaned silicon wafer can better exert the device performance of the … Read More

Focus on wafer grinding and heat treatment

Solar cell silicon material

Focus on wafer grinding and heat treatment

admin on June 1, 2022 0 Comments • Tags: #wafergrindingandheattreatment

For the sliced ​​silicon wafers, very few can be used directly, and most of them need to be processed on the corners of the silicon wafers. In order to make the corners smooth, they need to be ground, or even heat treated to change the stress structure. Chamfering the edge of the silicon wafer Before … Read More

Multi-wire cutting system adjustment and preparation

Solar cell silicon material

Multi-wire cutting system adjustment and preparation

admin on May 23, 2022 0 Comments • Tags: #crystallinesiliconsolarcell #multiwirecutting

Select and install a suitable guide wheel In multi-wire cutting, the design of the groove pitch of the guide wheel mainly depends on the target thickness of the silicon wafer, the diameter of the steel wire, the grain size of the abrasive and the performance of the equipment. In actual production, the diameter of the … Read More

How to prepare polysilicon by the silane method?

Solar cell silicon material

How to prepare polysilicon by the silane method?

admin on December 17, 2021 0 Comments • Tags: #chemicalpreparationofpolysilicon #disadvantagesofsilanemethod #preparationmethodofpolysilicon

Silane is actually an abbreviation for monosilane. Silane is easy to thermally decompose, and high-purity polysilicon can be obtained by decomposing at 800~900℃, and the reduction energy consumption is low. In addition, monosilane is easy to purify and is a gas at room temperature, so it can be effectively removed by adsorption purification methods. The … Read More

How to prepare polysilicon by zinc reduction method?

Solar cell silicon material

How to prepare polysilicon by zinc reduction method?

admin on December 14, 2021 0 Comments • Tags: #problemsofzincreductionmethod #processflowofzincreductionmethod #technologyofpreparingpolysiliconbyzincreductionmethod

The technology for preparing polysilicon by the zinc reduction method is not the latest technology. In terms of history, it was born before the Siemens method. The zinc reduction method was first tested by DuPont in the United States during World War II, using zinc (Zn) to reduce SiCl4 to produce polysilicon. During the 1950s … Read More

Improved Siemens method preparation process and precautions

Solar cell silicon material

Improved Siemens method preparation process and precautions

admin on December 9, 2021 0 Comments • Tags: #improvedsiemenspreparationprocess #pointstonotefortheimprovedsiemensmethod #polysiliconpreparationprocess

1. Hydrogen preparationHydrogen is produced by electrolysis of desalinated water in the electrolytic cell, and the hydrogen is cooled, separated from the liquid, and then enters the deaerator. Under the action of the catalyst, the trace amount of oxygen in the hydrogen reacts with hydrogen to form water and is removed; the deoxygenated hydrogen is … Read More

Improved Siemens method to manufacture solar cell polysilicon

Solar cell silicon material

Improved Siemens method to manufacture solar cell polysilicon

admin on December 7, 2021 0 Comments • Tags: #advantagesoftheimprovedsiemensmethod #improvedsiemensprocessequipmentused #siemensprocess

In 1955, Siemens successfully developed the process technology of using H to reduce SiHCl3 to deposit silicon on a silicon core heating element, and built a factory in 1957 for industrial-scale production, which is commonly referred to as the Siemens method. Based on the Siemens process, it was further improved later, adding a reduction tail … Read More

What is the percentage of purity of metal silicon?

Solar cell silicon material

What is the percentage of purity of metal silicon?

admin on November 29, 2021 0 Comments • Tags: #impuritiesofmetalsilicon #metallurgicalgradesilicon #physicalmethodpolysilicon

The purity of the reduced silicon is mostly 98% to 99.9%, which is called metallurgical grade silicon (MG-Si). Metallurgical grade silicon, also known as industrial silicon, chemical silicon, crystalline silicon or metallic silicon, is mainly used as an additive for non-ferrous alloys, as an alloying agent for silicon steel, and as a deoxidizer for smelting … Read More

Silicon reduction equipment-composition of submerged arc furnace

Solar cell silicon material

Silicon reduction equipment-composition of submerged arc furnace

admin on November 19, 2021 0 Comments • Tags: #compositionofsubmergedarcfurnace #metallurgicalgradesiliconproductionequipment

The submerged arc furnace is composed of furnace body system, electrical system, charging system, discharge system, smoke exhaust system, cooling system, control system, power system, maintenance system and other equipment. The furnace body system consists of furnace shell, furnace lining, furnace cover, furnace bottom, controller (non-magnetic stainless steel), hanging cylinder steel platform, control tube (stainless … Read More