不同工艺对太阳电池弯曲力学性能的影响
发布时间：2019-01-07 12:03
【摘要】：采用SR型单晶硅片作为原材料,对钝化发射极背面接触(Passivated emitter and rear cell,PERC)工艺和普通单晶生产工艺中各步骤所得硅片的弯曲力学性能进行对比。结果表明,PERC工艺各步骤均对硅片的弹性模量和抗弯强度产生了明显影响,而普通工艺中只是印刷和烧结影响严重;通过对最终生产的电池片进行比较,PERC工艺的弹性模量较高,即在外力作用下不容易变形;普通单晶工艺电池片的抗弯强度较高,从而使电池片能承受较大的载荷。通过改变PERC工艺的不同条件发现,在PERC工艺中改变背场形式和改变激光开槽方向均可以提高电池片的抗弯强度,并且激光图形间断的电池片的抗弯强度高于激光图形连续的电池片。
[Abstract]:Using SR single crystal wafer as raw material, the bending mechanical properties of passivated emitter backside contact (Passivated emitter and rear cell,PERC) process and common single crystal production process were compared. The results show that the elastic modulus and flexural strength of silicon wafer are obviously affected by each step of PERC process, but the effect of printing and sintering is serious in common process. The results show that the elastic modulus of the PERC process is high, that is, it is not easy to deform under the external force, and the bending strength of the ordinary single crystal process is higher, so that the battery chip can bear a large load. By changing the different conditions of PERC process, it is found that the bending strength of the battery can be improved by changing the backfield form and the laser slotted direction in the PERC process. Moreover, the bending strength of the battery with discontinuous laser pattern is higher than that with continuous laser pattern.
【作者单位】： 晶澳太阳能有限公司;
【分类号】：TM914.4
[Abstract]:Using SR single crystal wafer as raw material, the bending mechanical properties of passivated emitter backside contact (Passivated emitter and rear cell,PERC) process and common single crystal production process were compared. The results show that the elastic modulus and flexural strength of silicon wafer are obviously affected by each step of PERC process, but the effect of printing and sintering is serious in common process. The results show that the elastic modulus of the PERC process is high, that is, it is not easy to deform under the external force, and the bending strength of the ordinary single crystal process is higher, so that the battery chip can bear a large load. By changing the different conditions of PERC process, it is found that the bending strength of the battery can be improved by changing the backfield form and the laser slotted direction in the PERC process. Moreover, the bending strength of the battery with discontinuous laser pattern is higher than that with continuous laser pattern.
【作者单位】： 晶澳太阳能有限公司;
【分类号】：TM914.4
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