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Assessing the Long-term Stability of LECO Treated PERC Cells in a Module
E. Krassowski, B. Jaeckel, M. Pander, D. Daßler, S. Malik
Degradation, Reliability, PERC, PV Module, Metallization
Photovoltaic Modules and BoS Components
Subtopic: Materials for PV Modules, Durability, Reliability and Accelerated Testing Methods
Event: 8th World Conference on Photovoltaic Energy Conversion
Session: 3DO.18.5
ISBN: 3-936338-86-8
0,00 EUR
Document(s): presentation


In this contribution, a method is developed to assess the long-term stability of industrial LECO treated PERC cells in a module. Therefore, extended accelerated aging tests as well as outdoor measurements were performed on modules comprising LECO treated cells as well as untreated references. A method is described, how data can be evaluated to separate typical, known aging and degradation effects from presumable LECO specific effects. As the result of the investigation, it was found that the strings comprising LECO treated cells showed no difference in the accelerated aging or degradation behavior compared to the reference, that can be attributed to LECO. Hence, improvements in the efficiency and/or yield on cell level due to LECO can be translated to the module or even system level considering typical aging and degradation behavior, independently of a prior LECO process.