连续激光对太阳能电池的损伤机理研究

Mechanisms Research on Continous Wave Laser Induced Damage to Solar Cells

针对连续激光辐照太阳能电池造成的损伤效应,通过观察电池损伤区域的形貌,结合电池的等效电路和I-V特性曲线,分析了已损伤电池的输出参数下降情况以及激光辐照所带来的影响,并对太阳能电池的损伤机理进行了研究。研究结果表明,激光烧蚀太阳能电池导致烧蚀区域无功率输出,同时使得电池的串联电阻增加,并联电阻减小,导致电池输出性能大幅度下降。

Aiming at the damage effects of solar cells under the irradiation of continous wave laser,the output parameter decrease of damaged solar cells and impact induced by laser irradiation are analyzed,the damage mechanisms of solar cells are researched through the observation of morphology of damaged area combined with the equivalent circuit diagram and I-V curves.The results show that laser ablated solar cell resulted in the ablation area is disabled,causes the increase of series resistance and the decrease of parallel resistance at the same time,and finally induces the output performance of solar cell to decrease largely.