Regensburg 2019 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 19: Hybrid and Perovskite Photovoltaics II
CPP 19.2: Vortrag
Dienstag, 2. April 2019, 09:45–10:00, H18
Minimizing Electrical Interconnection Losses in Laser-Patterned Perovskite Solar Cells — •Markus Fenske1, Christof Schultz1, Andreas Bartelt1, Antje Neubauer2, Cornelia Junghans2, Marko Jošt3, Bernd Rech4, Rutger Schlatmann1,5, Steve Albrecht3, and Bert Stegemann1 — 1Hochschule für Technik und Wirtschaft Berlin — 2Becker & Hickl GmbH, Berlin — 3Helmholtz-Zentrum Berlin für Materialien und Energie, Young Investigator Group for Perovskite Tandem Solar Cells — 4Helmholtz-Zentrum Berlin für Materialien und Energie, Institut für Silizium-Photovoltaik — 5Helmholtz-Zentrum Berlin für Materialien und Energie, PVcomB
Successful up-scaling of metal halide perovskite (MHP) solar cells from lab-scale to large module sizes requires monolithic series interconnection. Here we report on recent progress in P2 and P3 laser patterning. By systematically varying the laser pulse energy, pulse duration and laser wavelength, a process window for the patterning could be established. We demonstrate the lateral effect of the laser processing on the chemical composition in the patterned area (by EDX) and on the perovskite semiconductor properties in the vicinity of the scribed laser line (by TR-PL). The results show that shorter laser pulse durations (ps rather than ns) and shorter laser wavelengths (355 nm rather than 532 nm) have a beneficial effect particularly on P2 process control, thereby minimizing electrical interconnection losses.