太阳电池铸造多晶硅材料的结构缺陷及其控制

Restraining the Structure Defects in Cast Multicrystalline Silicon Materials Used for Solar Cells

铸造多晶硅具有高的性价比,已成为主要的光伏材料,其晶体内的结构缺陷显著影响太阳电池的转换效率。综述了传统铸造多晶硅太阳电池材料和新型黑硅太阳电池材料的研究进展,同时阐述了控制多晶硅中的杂质、晶界、位错的途径及方法。

Cast multicrystalline silicon has become the dominant material for solar cells for its high perfor-mance-price ratio.Properties of the solar cells strongly depend on structure defects of the multicrystalline silicon.The status quo of traditional multicrystalline silicon materials and black silicon materials used for solar cells is described.In addition,various routes to restrain the impurities,grain boundaries and dislocations in polysilicon are analyzed.