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Laser Marking of Silicon Solar Cells in Mass Production
U. vom Bauer, J.W. Müller, T. Patzlaff, D. Binder, S. Geißler, M. Spallek, P. Kappe, B. Brammer, D. Felsch
Quality, Traceability, Laser Marking, Data Matrix Code, Process Enhancement
Wafer-Based Silicon Solar Cells and Materials Technology
Subtopic: Manufacturing Issues and Processing
Event: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain
Session: 2CV.1.98
1710 - 1714
ISBN: 3-936338-26-4
Paper DOI: 10.4229/25thEUPVSEC2010-2CV.1.98
0,00 EUR
Document(s): paper


Solar Systems are capital intensive goods that will operate over a long period of time. In order to positively impact lifetime quality requirements, intensified process- and quality control is desirable. Laser marking is providing a meaningful contribution to these requirements. Applied to raw wafer at the beginning of the manufacturing process, each solar cell becomes traceable along the entire value chain and over the whole lifetime – since laser marking is a hard physical coding. As usual it takes transition work from patented innovation at laboratory stage till mass production proof. At Q-Cells we have gained vast experience by marking great number of solar cells under mass production conditions. The paper highlights some of the key factors to be considered for high yielding inline laser marking of silicon solar cells, since interest of customers and suppliers is rising for this topic in the industry.