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Selective Laser Structuring of Organic Solar Cells on Flexible Substrates for Roll to Roll Production
A. Gavrilova, P. Kubis, J. Winter, R. Moser, S. Schlosser, I. Richter, S. Geiger, M. Zöpfl, P. Lenk, H.-J. Egelhaaf, H.P. Huber
Thin Film Solar Cells and Modules
Subtopic: Perovskite, Organic and Hybrid devices
Event: 32nd European Photovoltaic Solar Energy Conference and Exhibition
Session: 3DV.2.35
ISBN: 3-936338-41-8
0,00 EUR
Document(s): poster


The production of large-area semi-transparent organic solar cells on flexible substrates in a roll to roll process is the next generation technology for reducing manufacturing costs. The monolithic serial interconnection in solar modules is achieved with three selective laser structuring processes: P1 (pattern 1) - Separation and galvanic isolation of the back contact, P2 - ablation of the absorber layer for front contact opening and finally P3 - separation and galvanic isolation of the front contact (s. Fig. 1). In today’s production lines P1, P2 and P3 are performed by femtosecond lasers (350 fs, 520 nm, 6.5 μJ, 500 kHz). In this work the selective laser structuring for P1, P2 and P3 with infrared lasers was studied at three different pulse durations, 800 ps, 10 ps and 470 fs, respectively, with layer-side (FS) and substrate-side (BS) irradiation.