Experimental Study on the Interaction Between Al and P in Si Solution

The effect of impurity interactions on removal efficiency in metallurgical grade silicon (MG-Si) was studied and analyzed to provide a new idea for removing impurities from MG-Si. This paper provides theoretical support the nonmetallic P during purification preparation crystalline silicon. interaction between Al liquid were investigated by directional solidification. effects different pull-down speeds, refining temperatures, holding times contents distributions investigated. experimental results solidification Si-P-Al ternary system showed that bottom top sample, gradually increased. phenomenon verifies accuracy activity coefficient calculated model. mutual attraction also confirmed.