两毛钱,单晶VS多晶的生死战争(5)

两毛钱,单晶VS多晶的生死战争

要想每千克的硅锭出片数增加，方法有二，一是提升成品率，二是减少切割槽距。减少切割槽距可以是降低硅片厚度也可以用更细的切割线，或是新的切割技术如金刚石线切甚至于激光切割。

下表中第一行为切片的成品率，第一列为切片的槽距，单位是微米。主表中的数据为每千克方锭的出片数（为计算方便单晶多晶都以每千克17.6mm来计算，计算方法：出片数=17.6/槽距*成品率）。事实上由于倒角的原因，同样槽距和成品率每千克单晶可以比多晶多切几片。

87.5％88％88.5％89％89.5％90％90.5％91％91.5％92％92.5％

325μm47.3847.6647.9348.248.4748.7449.0149.2849.5549.8250.09320μm48.1348.448.6848.9549.2349.549.7850.0550.3350.650.88315μm48.8949.1749.4549.7350.0150.2950.5750.8451.1251.451.68310μm49.6849.9650.2550.5350.8151.151.3851.6651.9552.2352.52305μm50.4950.7851.0751.3651.6551.9352.2252.5152.853.0953.38300μm51.3351.6351.9252.2152.5152.853.0953.3953.6853.9754.27295μm290μm285μm280μm275μm270μm265μm260μm255μm

52.253.154.04555657.0458.1159.2360.39

52.553.4154.3455.3156.3257.3658.4559.5760.74

52.853.7154.6555.6356.6457.6958.7859.9161.08

53.154.0154.9655.9456.9658.0159.1160.2561.43

53.454.3255.2756.2657.2858.3459.4460.5861.77

53.6954.6255.5856.5757.658.6759.7760.9262.12

53.9954.9255.8956.8957.9258.9960.1161.2662.46

54.2955.2356.257.258.2459.3260.4461.662.81

54.5955.5356.5157.5158.5659.6460.7761.9463.15

54.8955.8356.8157.8358.8859.9761.162.2863.5

55.1956.1457.1258.1459.260.361.4362.6263.84

注：目前单单只是让硅片变薄并不是问题，但成品率还需提高一点，主要是电池工艺必须得跟上。当下主流水平还是50片左右/KG，研发中已能到60片以上了。电池环节目前仅仅只有个别公司可以小批量生产150μm厚的电池片。

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