This study investigates the effect of corrosion of the metallization containing lead tellurite glass frit used in solar cells due to acetic acid. When the c-Si photovoltaic (PV) module is operating in the new degradation mode, the electroluminescence (EL) dark area showed an increase in the series resistance that spreads around the bus bars. To understand metallization corrosion, a high-temperature and high-humidity test was conducted using PV modules. The metallization was observed with a scanning electron microscope. Observation of the metallization of the degraded module confirmed the generation of voids and gaps near the interface between the metallization and the Si wafer in the EL dark area. It was also observed that Te and Pb were mostly eluted from the glass frit components in the metallization during the acetic acid leaching test. The results suggest that the elution of Te by the acetic acid generates voids and gaps in the metallization.

这项研究调查了乙酸对太阳能电池中使用的含金属碲化物铅玻璃粉的金属化层的腐蚀作用。当c-Si光伏（PV）模块以新的降级模式运行时，电致发光（EL）暗区显示出在汇流条周围扩展的串联电阻增加。为了了解金属化腐蚀，使用PV模块进行了高温高湿测试。用扫描电子显微镜观察金属化。观察降解模块的金属化，证实在EL暗区中金属化与Si晶片之间的界面附近产生了空隙和间隙。还观察到，在乙酸浸出测试期间，Te和Pb大部分从金属化过程中的玻璃料成分中洗脱出来。