TY - JOUR A1 - Schultz, Christof A1 - Fenske, Markus A1 - Otto, Nicolas A1 - Dion-Bertrand, Laura-Isabelle A1 - Gélinas, Guillaume A1 - Marcet, Stéphane A1 - Dagar, Janardan A1 - Schlatmann, Rutger A1 - Unger, Eva A1 - Stegemann, Bert ED - Bouclé, Johann T1 - Loss Analysis of P3 Laser Patterning of Perovskite Solar Cells via Hyperspectral Photoluminescence Imaging JF - Solar N2 - Upscaling perovskite solar cells and modules requires precise laser patterning for series interconnection and spatial characterization of cell parameters to understand laser–material interactions and their impact on performance. This study investigates the use of nanosecond (ns) and picosecond (ps) laser pulses at varying fluences for the P3 patterning step of perovskite solar cells. Hyperspectral photoluminescence (PL) imaging was employed to map key parameters such as optical bandgap energy, Urbach energy, and shunt resistance. The mappings were correlated with electrical measurements, revealing that both ns and ps lasers can be utilized for effective series interconnections with minimal performance losses at optimized fluences. Our findings provide a deeper understanding of fluence-dependent effects in P3 patterning. Moreover, the results demonstrate that the process window is robust, allowing for reasonable cell performance even with deviations from optimal parameters. This robustness, coupled with the scalability of the laser patterning process, emphasize its suitability for industrial module production. KW - Photoluminescence KW - photoluminescence KW - perovskite KW - laser KW - ablation KW - photovoltaic KW - series interconnection KW - solar module KW - thin film KW - hyperspectral KW - Perovskite KW - Laser KW - Photovoltaic Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:523-20545 SN - 2673-9941 VL - 5 IS - 2 PB - MDPI ER -