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<p>Perovskite solar cells (PSCs) hold promise for high-efficiency photovoltaic technology but face commercialization challenges due to scaling difficulties. A common approach for scaling PSCs involves creating perovskite solar modules (PSMs) with subcells connected in series, using P1, P2, and P3 laser scribing process to reduce interconnection losses. In this study, a standard nanosecond pulse UV laser was used to perform these scribes. Here we demonstrated that, by employing a single 45 µm laser line for each scribe, it can significantly reduce the dead area, resulting in exceptionally high geometric fill factors (GFFs). In inverted PSMs with active areas of 4.0 cm<sup>2</sup> and 10.8 cm<sup>2</sup>, it was reached GFFs of 99.3% and 98.8%, respectively. To the best of author’s knowledge, this work demonstrates the first successful use of a single nanosecond laser source for continuous P1-P2-P3 scribing, achieving a dead area as low as 0.7% in a 4 cm<sup>2</sup> module.</p>

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Inverted perovskite solar modules with 99.3% geometrical fill factor via nanosecond single laser patterning

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月21日

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  • Andrés E. R. Soto,
  • Vera C. M. Duarte,
  • Adélio Mendes,
  • Luísa Andrade

摘要

Perovskite solar cells (PSCs) hold promise for high-efficiency photovoltaic technology but face commercialization challenges due to scaling difficulties. A common approach for scaling PSCs involves creating perovskite solar modules (PSMs) with subcells connected in series, using P1, P2, and P3 laser scribing process to reduce interconnection losses. In this study, a standard nanosecond pulse UV laser was used to perform these scribes. Here we demonstrated that, by employing a single 45 µm laser line for each scribe, it can significantly reduce the dead area, resulting in exceptionally high geometric fill factors (GFFs). In inverted PSMs with active areas of 4.0 cm2 and 10.8 cm2, it was reached GFFs of 99.3% and 98.8%, respectively. To the best of author’s knowledge, this work demonstrates the first successful use of a single nanosecond laser source for continuous P1-P2-P3 scribing, achieving a dead area as low as 0.7% in a 4 cm2 module.