PERC背银浆烧蚀性检测方法研究

Study on Detecting the Degree of Corrosion of the Passivation Layer of Crystalline Silicon Solar Cells

本文对比了电极金属化过程对钝化层烧蚀程度的多种检测方法,并通过显微镜观测钝化层颜色以及形貌的方式来判断电极对钝化层是否烧穿并且统计烧穿点数量和烧穿面积。通过碱洗处理电池片的方法,可以得到更为直观判定结果。本文采用的检测方法能够便捷快速地判断钝化层烧蚀程度,排除了晶硅电池片制作过程多种因素对电性能的干扰,简化了检测过程,实验成本相比仪器分析明显降低,为今后PERC背银浆的配方改进提供简便的方法。

In this article,various methods for detecting the degree of corrosion of the passivation layer during the sintering process were investigated.The color and morphology of the passivation layer has been observed by microscope,and the number and area of burn-through points is counted to detect the corrosion of the passivation layer.Alkali cleaning is more noticeable among all methods.This method,which simplified the detection process and lowered experimental cost,can not only judge the degree of corrosion of the passivation layer quickly and easily,but also eliminate the interference of different factors on the electrical performance of the production process.