CN110854219A - 一种高效n型电池片及其制备方法 - Google Patents

一种高效n型电池片及其制备方法 Download PDF

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CN110854219A
CN110854219A CN201911342132.1A CN201911342132A CN110854219A CN 110854219 A CN110854219 A CN 110854219A CN 201911342132 A CN201911342132 A CN 201911342132A CN 110854219 A CN110854219 A CN 110854219A
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赵华飞
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Abstract

本发明公开了一种高效N型电池片，包括晶体硅片、正面栅线、背面电极，所述背面电极分布在晶体硅片的背面，所述正面栅线设置在晶体硅片的正面，所述晶体硅片的正面设置有若干球形凸起，所述球形凸起的内部设置有交汇凹槽，所述正面栅线包括主栅线、副栅线，所述主栅线和副栅线在交汇凹槽内交错结合，所述交汇凹槽内填充有导电银胶，所述副栅线的形状为四边形，所述主栅线的形状为直线形，所述主栅线沿副栅线的对角线设置并与副栅线相交。本发明能够使N型电池片的光电转换效率得到显著提升，制备工艺简单，生产成本低，利于推广应用。

Description

一种高效N型电池片及其制备方法
【技术领域】
本发明涉及太阳能电池的技术领域，特别是一种高效N型电池片及其制备方法的技术领域。
【背景技术】
随着全球能源危机的日益严重，开发研制新能源成为当今能源领域一个主要课题。太阳能以其无污染、取之不竭以及无地域性限制等特点成为新能源开发研制的一个主要对象。利用太阳电池进行光伏发电是当今利用太阳能的一个主要方式。太阳能电池的载体是硅片，根据其硅片制作工艺中掺杂类型的不同分为P型太阳能电池和N型太阳能电池。其中，N型太阳能电池由于比P型太阳能电池性能表现更为稳定，具有更长的少子寿命，以及大幅降低的光衰特性，因此逐渐成为光伏行业的一个主要研制课题。现有的N型太阳能电池的成本较高，并且N型太阳能电池片的光电转换效率较低。
【发明内容】
本发明的目的就是解决现有技术中的问题，提出一种高效N型电池片及其制备方法，能够使N型电池片的光电转换效率得到显著提升，制备工艺简单，生产成本低，利于推广应用。
为实现上述目的，本发明提出了一种高效N型电池片，包括晶体硅片、正面栅线、背面电极，所述背面电极分布在晶体硅片的背面，所述正面栅线设置在晶体硅片的正面，所述晶体硅片的正面设置有若干球形凸起，所述球形凸起的内部设置有交汇凹槽，所述正面栅线包括主栅线、副栅线，所述主栅线和副栅线在交汇凹槽内交错结合，所述交汇凹槽内填充有导电银胶，所述副栅线的形状为四边形，所述主栅线的形状为直线形，所述主栅线沿副栅线的对角线设置并与副栅线相交。
作为优选，所述副栅线的形状正四边形，所述副栅线线的数量有多个，相邻的副栅线之间的间距相同，所述副栅线的中心点位于同一点上。
作为优选，所述主栅线的数量有多根，所述主栅线在副栅线的中心点上交汇，所述主栅线的交汇处设置有加粗接点。
本发明提出了一种高效N型电池片的制备方法，依次包括以下步骤：
步骤一：将N型硅片置于清洗制绒液中进行清洗和制绒，在N型硅片上表面形成带交汇凹槽的球形凸起；
步骤二：将步骤一处理后的N型硅片经过下表面抛光印刷背面电极，在背面电极表面镀一层银反射膜；
步骤三：将步骤二处理后的N型硅片放入扩散炉中进行扩散制结；
步骤四：将步骤三处理后的N型硅片浸泡在氢氟酸水溶液中进行处理，取出沥干水分；
步骤五：在步骤四处理后的N型硅片上表面镀固态减反膜，在N型硅片上表面印刷正面栅线，在交汇凹槽内填充导电银胶；
步骤六：将步骤五处理后的N型硅片放入烧结炉进行低温烧结，得到太阳能电池片。
作为优选，所述扩散炉的温度为950-1000℃，所述烧结炉的温度为800-850℃。
本发明的有益效果：本发明通过将晶体硅片、正面栅线、背面电极结合在一起，经过试验优化，能够使N型电池片的光电转换效率得到显著提升，制备工艺简单，生产成本低，利于推广应用。
本发明的特征及优点将通过实施例结合附图进行详细说明。
【附图说明】
图1是本发明一种高效N型电池片的结构示意图。
图中：1-晶体硅片、2-球形凸起、3-交汇凹槽、4-主栅线、5-副栅线。
【具体实施方式】
参阅图1，本发明一种高效N型电池片，包括晶体硅片1、正面栅线、背面电极，所述背面电极分布在晶体硅片1的背面，所述正面栅线设置在晶体硅片1的正面，所述晶体硅片1的正面设置有若干球形凸起2，所述球形凸起2的内部设置有交汇凹槽3，所述正面栅线包括主栅线4、副栅线5，所述主栅线4和副栅线5在交汇凹槽3内交错结合，所述交汇凹槽3内填充有导电银胶，所述副栅线5的形状为四边形，所述主栅线4的形状为直线形，所述主栅线4沿副栅线5的对角线设置并与副栅线5相交，所述副栅线5的形状正四边形，所述副栅线5线的数量有多个，相邻的副栅线5之间的间距相同，所述副栅线5的中心点位于同一点上，所述主栅线4的数量有多根，所述主栅线4在副栅线5的中心点上交汇，所述主栅线4的交汇处设置有加粗接点。
本发明提出了一种高效N型电池片的制备方法，依次包括以下步骤：
步骤一：将N型硅片置于清洗制绒液中进行清洗和制绒，在N型硅片上表面形成带交汇凹槽3的球形凸起2；
步骤二：将步骤一处理后的N型硅片经过下表面抛光印刷背面电极，在背面电极表面镀一层银反射膜；
步骤三：将步骤二处理后的N型硅片放入扩散炉中进行扩散制结；
步骤四：将步骤三处理后的N型硅片浸泡在氢氟酸水溶液中进行处理，取出沥干水分；
步骤五：在步骤四处理后的N型硅片上表面镀固态减反膜，在N型硅片上表面印刷正面栅线，在交汇凹槽3内填充导电银胶；
步骤六：将步骤五处理后的N型硅片放入烧结炉进行低温烧结，得到太阳能电池片，所述扩散炉的温度为950-1000℃，所述烧结炉的温度为800-850℃。
本发明通过将晶体硅片1、正面栅线、背面电极结合在一起，经过试验优化，能够使N型电池片的光电转换效率得到显著提升，制备工艺简单，生产成本低，利于推广应用。
上述实施例是对本发明的说明，不是对本发明的限定，任何对本发明简单变换后的方案均属于本发明的保护范围。

Claims (5)

1.一种高效N型电池片，其特征在于：包括晶体硅片(1)、正面栅线、背面电极，所述背面电极分布在晶体硅片(1)的背面，所述正面栅线设置在晶体硅片(1)的正面，所述晶体硅片(1)的正面设置有若干球形凸起(2)，所述球形凸起(2)的内部设置有交汇凹槽(3)，所述正面栅线包括主栅线(4)、副栅线(5)，所述主栅线(4)和副栅线(5)在交汇凹槽(3)内交错结合，所述交汇凹槽(3)内填充有导电银胶，所述副栅线(5)的形状为四边形，所述主栅线(4)的形状为直线形，所述主栅线(4)沿副栅线(5)的对角线设置并与副栅线(5)相交。
2.如权利要求1所述的一种高效N型电池片，其特征在于：所述副栅线(5)的形状正四边形，所述副栅线(5)线的数量有多个，相邻的副栅线(5)之间的间距相同，所述副栅线(5)的中心点位于同一点上。
3.如权利要求1所述的一种高效N型电池片，其特征在于：所述主栅线(4)的数量有多根，所述主栅线(4)在副栅线(5)的中心点上交汇，所述主栅线(4)的交汇处设置有加粗接点。
4.一种高效N型电池片的制备方法，其特征在于：依次包括以下步骤：
步骤一：将N型硅片置于清洗制绒液中进行清洗和制绒，在N型硅片上表面形成带交汇凹槽(3)的球形凸起(2)；
步骤二：将步骤一处理后的N型硅片经过下表面抛光印刷背面电极，在背面电极表面镀一层银反射膜；
步骤三：将步骤二处理后的N型硅片放入扩散炉中进行扩散制结；
步骤四：将步骤三处理后的N型硅片浸泡在氢氟酸水溶液中进行处理，取出沥干水分；
步骤五：在步骤四处理后的N型硅片上表面镀固态减反膜，在N型硅片上表面印刷正面栅线，在交汇凹槽(3)内填充导电银胶；
步骤六：将步骤五处理后的N型硅片放入烧结炉进行低温烧结，得到太阳能电池片。
5.如权利要求4所述的，其特征在于：所述扩散炉的温度为950-1000℃，所述烧结炉的温度为800-850℃。
CN201911342132.1A 2019-12-24 2019-12-24 一种高效n型电池片及其制备方法 Pending CN110854219A (zh)

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