The screen-printed Al-back surface field (Al-BSF) is widely used now to reduce the back surface recombination velocity ( S b) and improve the efficiency of silicon solar cells.

• 铝背场能够有效降低电池背表面复合速率,提高转换效率,是商品化晶体硅太阳电池普遍采用的主要背表面钝化结构。