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PILOT SCALE PRODUCTION AND RELIABILITY TESTING OF SOLAR CELL MODULES BASED ON A LOW COST COPPER ELECTROPLATING PROCESS

机译:基于低成本铜电镀工艺的太阳能电池模块的中试生产和可靠性测试

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As silicon solar cell technology featuring screen printed silver paste continues to mature, the cost of the front side conductor continues to grow as a percentage of the overall manufacturing cost A cell concept based on electroplated nickel and copper contacts offers a significant cost savings, as well as a benefit to cell efficiency through reduced shading and lower contact and line resistance. This work details a new, simplified metallization process featuring picosecond laser ablation of the ARC combined with single-sided plating from a novel, high-speed copper formulation. More importantly, we present the details of a low cost scale-up of the metallization process on high volume mass production tools, plus fabrication of industrial modules and reliability testing according to IEC specifications. Electrical and adhesion data is presented on a statistically comprehensive sample set, proving the benefits of the new contact structure. These data offer the combined benefit of improved efficiency, a sizeable reduction in cell materials cost, and a clear pathway for the implementation of the process on a mass production scale.
机译:随着采用丝网印刷银浆的硅太阳能电池技术的不断成熟,正面导体的成本在总制造成本中所占的比例持续增长。基于电镀镍和铜触点的电池概念也可以节省大量成本通过减少阴影,降低接触和线路电阻来提高电池效率。这项工作详细介绍了一种新的,简化的金属化工艺,该工艺具有皮秒级的ARC激光烧蚀技术和新型高速铜配方的单面电镀技术。更重要的是,我们详细介绍了在大规模量产工具上进行金属化工艺的低成本放大,工业模块的制造以及根据IEC规范进行的可靠性测试的详细信息。电气和粘附力数据在统计上综合的样本集中显示,证明了新触点结构的好处。这些数据具有以下优点:提高了效率,大大降低了电池材料的成本,并为在大规模生产中实施该方法提供了明确的途径。

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