一种用红外热像监测硅太阳能光伏电池生产工艺的新方法

为了监测硅太阳电池生产工艺，设计了一套红外热像系统对单晶硅太阳电池的漏电情况进行研究。外加直流偏压时，太阳电池的漏电区域会明显发热。红外热像仪可以发现这些发热区域，从而确定漏电的位置。结合金相显微镜、扫描电子显微镜和能量色散谱等分析手段，总结了刻边、镀膜、丝网印刷和烧结工艺所造成的七种常见漏电形式。本文还提出了解决各类型漏电的可能方案，为进一步优化太阳电池生产工艺提供指导。

An efficient method for monitoring the shunts in silicon solar cells during fabrication processes with infrared imaging

In order to monitor the fabrication process, an infrared imaging system was established to detect the shunted regions in crystalline silicon solar cells. The temperature of the shunted region was obviously higher than that of the non-shunted region when the cell was biased under direct voltage due to the Joule heat effect, and the shunted region could be detected by infrared imaging. The shunts caused by seven different reasons can be identified using metallurgical microscopy, scanning electron microscopy, and energy dispersive X-ray spectroscopy. Approaches for diminishing shunts are presented. The methods are beneficial for the optimization of the cell fabrication processes and the improvement of the cell performances.