Although the monocrystalline silicon (mono-Si)-passivated emitter and rear contact (PERC) solar cells have achieved incredible efficiency, they still can be further improved by hydrogenation. So the hydrogenation was performed to investigate the improvement of large area (>240 cm 2 ) mono-Si PERC solar cells and estimate the significance of previous light-induced degradation (pre-LID) under a high-intensity infrared (HI-IR) LEDs source platform. Then, the results indicated that the parameters, such as open-circuit voltage ( U oc ) and short-circuit current density ( J sc ) and fill factor (FF), could be better improved after LED hydrogenation with the execution of the pre-LID. The efficiency of mono-Si PERC solar cells with pre-LID increased by ~0.190 ± 0.005% abs. for 2 min, which was higher than that without pre-LID (0.115 ± 0.005% abs. ). Moreover, the results showed that the efficiency of large area mono-Si PERC solar cells with light-induced degradation (LID) treatment after LED hydrogenation only existed a slight degradation of about −0.253 ± 0.005% rel. . Compared with mono-Si PERC solar cells without pre-LID, the efficiency improvement and LID mitigation of mono-Si solar cells with pre-LID was faster and more significant by LED hydrogenation, so that the LED hydrogenation time significantly can shorten from 6 to 2 min. Additionally, the possible presence of a boron-oxygen (BO) model was estimated, and this BO model is susceptible to be activated by the injection of external energy, resulting in more BO defects in the process of pre-LID, so that subsequent hydrogenation rate becomes faster.

中文翻译：

---

预光诱导降解刺激单晶硅PERC太阳能电池的杂质机制

尽管单晶硅 (mono-Si) 钝化发射极和背接触 (PERC) 太阳能电池已经取得了令人难以置信的效率，但它们仍然可以通过氢化进一步提高。因此，进行氢化以研究大面积（> 240 cm 2 ）单晶 PERC 太阳能电池的改进，并在高强度红外（HI-IR）下估计先前光诱导降解（pre-LID）的重要性LED 光源平台。然后，结果表明，LED氢化后的开路电压（U oc ）和短路电流密度（ J sc ）和填充因子（FF）等参数可以更好地改善盖。具有 pre-LID 的单晶 PERC 太阳能电池的效率提高了 ~0.190 ± 0.005% abs。2 分钟，高于没有 pre-LID 的情况（0.115 ± 0.005% abs.）。此外，结果表明，LED氢化后经过光诱导降解（LID）处理的大面积单晶PERC太阳能电池的效率仅存在约-0.253±0.005% rel的轻微退化。. 与没有pre-LID的单晶PERC太阳能电池相比，具有pre-LID的单晶太阳能电池的效率提高和LID缓解速度更快，LED氢化更显着，因此LED氢化时间可以从6缩短到2 分钟。此外，估计可能存在硼氧（BO）模型，该模型容易被外部能量注入激活，导致预LID过程中出现更多的BO缺陷，从而导致后续加氢速度变得更快。结果表明，经过光诱导降解（LID）处理的大面积单晶 PERC 太阳能电池在 LED 氢化后的效率仅存在约 -0.253 ± 0.005% rel 的轻微退化。. 与没有pre-LID的单晶PERC太阳能电池相比，具有pre-LID的单晶太阳能电池的效率提高和LID缓解速度更快，LED氢化更显着，因此LED氢化时间可以从6缩短到2 分钟。此外，估计可能存在硼氧（BO）模型，该模型容易被外部能量注入激活，导致预LID过程中出现更多的BO缺陷，从而导致后续加氢速度变得更快。结果表明，经过光诱导降解（LID）处理的大面积单晶 PERC 太阳能电池在 LED 氢化后的效率仅存在约 -0.253 ± 0.005% rel 的轻微退化。. 与没有pre-LID的单晶PERC太阳能电池相比，具有pre-LID的单晶太阳能电池的效率提高和LID缓解速度更快，LED氢化更显着，因此LED氢化时间可以从6缩短到2 分钟。此外，估计可能存在硼氧（BO）模型，该模型容易被外部能量注入激活，导致预LID过程中出现更多的BO缺陷，从而导致后续加氢速度变得更快。