硅系合金法提纯多晶硅的研究进展  

Research Progress on Refining of Silicon by Si-M Alloy

作　　者：吴浩[1] 黄平平[1] 傅翠梨[1] 张蓉[1] 李锦堂[1] 罗学涛[1] 

机构地区：[1]厦门大学材料学院材料科学与工程系,厦门361005

出　　处：《材料导报》2011年第17期37-41,共5页Materials Reports

基　　金：福建省自然科学基金(2010J05120)

摘　　要：硅系合金法近年来已成为冶金法提纯多晶硅的研究热点。大量研究表明,适合的硅系合金能使杂质在硅中的分凝系数大大降低。利用Si-Al合金,通过定向酸洗工艺所得到的多晶硅制成太阳电池其效率最高可达10.6%,在感应磁场下凝固能使Si有效分离,大大降低酸的用量。Si-Ga合金法制成的单晶硅锭,纯度可达5N,太阳能电池的效率也达到了15%,但成本较高。Si-Cu合金则具有容易分离的优点。同时介绍了其他硅系合金的研究进展。Refining of silicon utilizing Si-M alloy system has received much focus in recent years. A great deal of research proves that the segregation coefficient of impurities will decrease greatly in the right Si-M alloy. In Si-A1 alloy system, the silicon can be refined easily with acid leaching and solidification refining, the solar cell efficiency reaches 10.6%. Silicon can be easily separated in solidified magnetic field and usage of acid decreases. In Si-Ga alloy system, the purity of monocrystalline silicon reaches 5N and the solar cell efficiency reaches 15%, but this method is undesirable because of its cost. The most advantage of Si-Cu alloy system is easy to separate because of the high density of copper. Research progress on refining of silicon by other Si-M alloy is also introduced.

关 键 词：多晶硅 冶金 硅系合金 

分 类 号：TN304.12[电子电信—物理电子学]