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

What is physical vacuum smelting?

Physical method solar cell polysilicon

What is physical vacuum smelting?

admin on January 13, 2022 0 Comments • Tags: #impuritiesinsilicon #inductionheating #principleofelectromagneticinduction

This method is carried out under vacuum conditions, and the effect of impurity removal is achieved through several processes of degassing, decomposition, volatilization and deoxidation. At a temperature slightly higher than the melting point of silicon (1500°C), the Mo gas pressure of silicon is 0.5Pa, and at this time, impurities with a Mo gas pressure … Read More

What is the hydrometallurgical technology to remove impurities from metal silicon?

Physical method solar cell polysilicon

What is the hydrometallurgical technology to remove impurities from metal silicon?

admin on January 7, 2022 0 Comments • Tags: #advantagesofhydrometallurgy #enhancedleachingmethod #impuritiesinsilicon

Hydrometallurgy refers to the method of crushing metallurgical silicon and immersing it in an acid solution (or other substance solution) to remove metal impurities in the metal silicon. Hydrometallurgy needs to crush industrial silicon into powder with a suitable particle diameter, otherwise it will not be easy In addition to miscellaneous. Prepare a certain concentration … Read More

What physical methods are there to remove impurities from silicon water?

Physical method solar cell polysilicon

What physical methods are there to remove impurities from silicon water?

admin on December 28, 2021 0 Comments • Tags: #airblowingmethodtoremoveimpurities #electronbeamvacuummeltingmethod #impuritiesinsilicon

1. Air Blow methodBlow inert gas, high-purity oxygen, hydrogen, nitrogen, argon and water vapor into the silicon water. These gases rise from the silicon water. Each small bubble is equivalent to a “small vacuum chamber”. The partial pressure of H, N, and CO in the bubble is close to zero. Adsorbed to the bubble surface … Read More

How to prepare solar cell polysilicon by physical method?

Physical method solar cell polysilicon

How to prepare solar cell polysilicon by physical method?

admin on December 22, 2021 0 Comments • Tags: #impuritiesinsilicon #purifiedsolargradesilicon #sourcesofimpuritiesinsiliconmaterials

The physical method is that the silicon element in the metal silicon does not participate in the chemical reaction, but uses different physical methods to remove different impurities step by step to achieve the purpose of purification. Because this method is similar to the method of refining outside the metallurgical furnace in many aspects, it … Read More