Upscaling Inverted Perovskite Solar Cells: Optimization of Laser Scribing for Highly Efficient Mini-Modules

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Di Giacomo, Francesco  ORCID logo
Castriotta, Luigi A.  ORCID logo
Di Girolamo, Diego 
Ducati, Caterina 

The upscaling of perovskite solar cells is one of the challenges that must be addressed to pave the way toward the commercial development of this technology. As for other thin-film photovoltaic technologies, upscaling requires the fabrication of modules composed of series-connected cells. In this work we demonstrate for the first time the interconnection of inverted modules with NiOx using a UV ns laser, obtaining a 10.2 cm2 minimodule with a 15.9% efficiency on the active area, the highest for a NiOx based perovskite module. We use optical microscopy, energy-dispersive X-ray spectroscopy, and transfer length measurement to optimize the interconnection. The results are implemented in a complete electrical simulation of the cell-to-module losses to evaluate the experimental results and to provide an outlook on further development of single junction and multijunction perovskite modules.

perovskite solar cells, laser ablation, perovskite solar module
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Horizon 2020 Framework Programme (764047, 764787)
Ministry of Education and Science of the Russian Federation (075-15-2019-872 (14.Y26.31.0027/074-02-2018-327))