Tag: Air Blowing method to remove impurities
Physical method solar cell polysilicon
What physical methods are there to remove impurities from silicon water?
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