太阳能级硅中轻质元素(C,N,O)研究进展

摘要

The presence of light elements like C ,N ,O has wide influence on the properties of solar-grade silicon .Since silicon is the dominating raw material of solar cells ,the purity of crystalline sili-con has significant influence on electrical properties of solar cells .In this paper ,the research progress on carbon ,nitrogen and oxygen on the presence ,distribution ,formation mechanism and process con-trol was summarized .An outlook for light elements research in silicon was also proposed ,the combi-nation of different purification methods to control and eliminate impurities in silicon is worth paying attention to investigate ,and the further research on the behavior of C ,N ,O in silicon can also im-prove silicon quality .%C,N,O等轻质元素的存在对太阳能级晶体硅材料的性能有着广泛影响,而硅材料作为太阳能电池的主要原材料,其纯度对电池的电学性能有着决定性作用.本文总结了晶体硅中C,N,O元素的存在形态、分布规律、形成机制及工艺控制等的研究进展,并对未来硅中轻质元素的研究进行了展望,使用各种提纯工艺的优势交叉互补来控制及去除硅中的杂质值得研究及关注,对硅中C,N,O元素的交互作用的深入研究也将会对硅材料质量的提高有着积极作用.