Abstract Solar cells with polysilicon-based passivating and carrier selective contacts are in the nascent stages of industrialization. Advances in commercially available metallization pastes are necessary to further improve the efficiency of industrial polysilicon-based solar cells and approach the best-reported lab efficiency of such cells. In this work, we have analyzed the front and rear screen-printed metallization of large-area n-type monoPolyTM cells with rear-side low-pressure chemical vapor deposited (LPCVD) polysilicon. Metallization pastes specifically optimized for contacting poly-Si layers are used in this work. The metallization is evaluated by studying its impact on the solar cell performance and by further electrical and optical characterization. An efficiency improvement of 0.5% absolute is demonstrated due to improvements in metallization pastes with a 23% champion cell efficiency (cell area: 244.3 cm2, busbarless metallization). An analysis of the fabricated cells indicates that the efficiency is currently limited by recombination at the front surface, both at the passivated and the metallized regions.

中文翻译：

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具有 SiOx/poly-Si 钝化触点的工业太阳能电池丝网印刷金属化的进展

摘要 具有多晶硅钝化和载流子选择性接触的太阳能电池正处于工业化的初期阶段。为了进一步提高工业多晶硅太阳能电池的效率并接近此类电池的最佳报告实验室效率，商业上可获得的金属化浆料的进步是必要的。在这项工作中，我们分析了具有背面低压化学气相沉积 (LPCVD) 多晶硅的大面积 n 型 monoPolyTM 电池的正面和背面丝网印刷金属化。在这项工作中使用了专门为接触多晶硅层而优化的金属化浆料。通过研究金属化对太阳能电池性能的影响以及进一步的电学和光学表征来评估金属化。效率提升0。5% 的绝对值是由于金属化浆料的改进，具有 23% 的冠军电池效率（电池面积：244.3 cm2，无母线金属化）。对制造的电池的分析表明，效率目前受到前表面（钝化区域和金属化区域）复合的限制。