CN110137309A - 一种提升双面电池背面抗pid性能的方法 - Google Patents
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Abstract
本发明公开了一种提升双面电池背面抗PID性能的方法,属于晶硅太阳能电池制造生产技术领域,目的在于解决现有技术中双面电池背面抗PID性能较差的问题。其包括以下步骤:(1)双面PERC电池经制绒工艺、扩散工艺、刻蚀工艺后,进行退火工艺时,确保恒温范围处于680‑800℃,氧气流量500‑3000SCCM,退火时间为10‑100min;(2)使用原子层沉积法进行氧化铝镀膜工艺时,确保双面PERC电池背面氧化铝厚度为2‑10nm;(3)进行背面氮化硅镀膜工艺,确保双面PERC电池背面氮化硅镀膜厚度80‑110nm,折射率2.12‑2.3;(4)双面PRRC电池经背面氮化硅镀膜工艺后,进行后续工艺,即可检测分选,完成制备。本发明适用于提升双面电池背面抗PID性能。
Description
技术领域
本发明属于晶硅太阳能电池制造生产技术领域,具体涉及一种提升双面电池背面抗PID性能的方法。
背景技术
单晶双面PERC高效电池通过改变背面铝背场印刷为铝栅线印刷,并结合刻蚀工艺优化、背钝化和背镀膜工艺优化,在P型单晶上实现双面发电能力。匹配双玻组件封装技术安装于不同应用场景,可相比单面PERC产品增加10%-30%的系统发电增益。同时随着光伏行业发展,对电池片和组件可靠性的技术检测手段日趋完善,也越严格。其中PID的检测条件最严苛,主要是因为PID问题一直会伴随组件的使用寿命一直存在,如果不能在封装组件之前完全解决PID问题,严重影响组件质量。因此解决双面电池正背面PID问题是很重要的工作。电池正面PID目前已经成功解决,满足国家质检标准,但是目前由于单晶双面PERC电池在太阳能电池制造行业算是新产品、前端产品,对电池背面性能检测没有完善的检测标准,只能基于正面电池要求或者客户要求进行检测和把控。但是电池背面的确存在PID问题,给后期组件使用中增加风险。因此,如何解决双面PERC电池背面PID问题具有重要的研究意义。
本专利设计的背面抗PID性能制作方法,基于常规PERC电池生产线,完全兼容常规PERC电池生产线,在不增加新设备的前提下实现PERC双面电池背面抗PID性能,满足质检要求、客户要求。具有一定创新性和实用性。
发明内容
本发明的目的在于:提供一种提升双面电池背面抗PID性能的方法,解决现有技术中双面电池背面抗PID性能较差的问题。
本发明采用的技术方案如下:
一种提升双面电池背面抗PID性能的方法,包括以下步骤:
(1)双面PERC电池经制绒工艺、扩散工艺、刻蚀工艺后,在进行退火工艺时,确保恒温范围处于680-800℃,氧气流量500-3000SCCM,退火时间为10-100min;
(2)双面PERC电池经退火工艺后,使用原子层沉积法进行氧化铝镀膜工艺时,确保双面PERC电池背面氧化铝厚度为2-10nm;
(3)双面PERC电池氧化铝镀膜工艺后,进行背面氮化硅镀膜工艺,确保双面PERC电池背面氮化硅镀膜厚度80-110nm,折射率2.12-2.3;
(4)双面PRRC电池经背面氮化硅镀膜工艺后,进行正面氮化硅镀膜工艺、背面激光开槽工艺、丝网印刷工艺,即可检测分选,完成制备。
综上所述,由于采用了上述技术方案,本发明的有益效果是:
1、本发明中,设计的双面PERC电池背面抗PID性能制作方法,基于常规PERC电池生产线,完全兼容常规PERC电池生产线,在不增加新设备的前提下,通过精确控制退火工艺、ALD工艺、背面氮化硅镀膜工艺中的各项参数,实现了PERC双面电池背面抗PID性能提升,满足了质检要求、客户要求。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅用以解释本发明,并不用于限定本发明。
一种提升双面电池背面抗PID性能的方法,包括以下步骤:
(1)双面PERC电池经制绒工艺、扩散工艺、刻蚀工艺后,在进行退火工艺时,确保恒温范围处于680-800℃,氧气流量500-3000SCCM,退火时间为10-100min;
(2)双面PERC电池经退火工艺后,使用原子层沉积法进行氧化铝镀膜工艺时,确保双面PERC电池背面氧化铝厚度为2-10nm;
(3)双面PERC电池氧化铝镀膜工艺后,进行背面氮化硅镀膜工艺,确保双面PERC电池背面氮化硅镀膜厚度80-110nm,折射率2.12-2.3;
(4)双面PRRC电池经背面氮化硅镀膜工艺后,进行正面氮化硅镀膜工艺、背面激光开槽工艺、丝网印刷工艺,即可检测分选,完成制备。
本发明在实施过程中,设计的双面PERC电池背面抗PID性能制作方法,基于常规PERC电池生产线,完全兼容常规PERC电池生产线,在不增加新设备的前提下,通过精确控制退火工艺、ALD工艺、背面氮化硅镀膜工艺中的各项参数,实现了PERC双面电池背面抗PID性能提升,满足了质检要求、客户要求。
实施例1
一种提升双面电池背面抗PID性能的方法,包括以下步骤:
(1)双面PERC电池经制绒工艺、扩散工艺、刻蚀工艺后,在进行退火工艺时,确保恒温范围处于680-800℃,氧气流量500-3000SCCM,退火时间为10-100min;
(2)双面PERC电池经退火工艺后,使用原子层沉积法进行氧化铝镀膜工艺时,确保双面PERC电池背面氧化铝厚度为2-10nm;
(3)双面PERC电池氧化铝镀膜工艺后,进行背面氮化硅镀膜工艺,确保双面PERC电池背面氮化硅镀膜厚度80-110nm,折射率2.12-2.3;
(4)双面PRRC电池经背面氮化硅镀膜工艺后,进行正面氮化硅镀膜工艺、背面激光开槽工艺、丝网印刷工艺,即可检测分选,完成制备。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。
Claims (1)
1.一种提升双面电池背面抗PID性能的方法,其特征在于,包括以下步骤:
(1)双面PERC电池经制绒工艺、扩散工艺、刻蚀工艺后,在进行退火工艺时,确保恒温范围处于680-800℃,氧气流量500-3000SCCM,退火时间为10-100min;
(2)双面PERC电池经退火工艺后,使用原子层沉积法进行氧化铝镀膜工艺时,确保双面PERC电池背面氧化铝厚度为2-10nm;
(3)双面PERC电池氧化铝镀膜工艺后,进行背面氮化硅镀膜工艺,确保双面PERC电池背面氮化硅镀膜厚度80-110nm,折射率2.12-2.3;
(4)双面PRRC电池经背面氮化硅镀膜工艺后,进行正面氮化硅镀膜工艺、背面激光开槽工艺、丝网印刷工艺,即可检测分选,完成制备。
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