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Light Induced Degradation in Multicrystalline Solar Grade Silicon Solar Cells Evaluated Using Accelerated LID
K. Peter, P. Preis, P.E. Díaz-Pérez, J. Theobald, E. Enebakk, A.-K. Soiland, A. Savtchouk, M. Wilson
Solar Grade Silicon, Light Induced Degradation (LID)
Wafer-based Silicon Solar Cells and Materials Technology
Subtopic: Silicon Feedstock, Crystallisation and Wafering
Event: 26th European Photovoltaic Solar Energy Conference and Exhibition
Session: 2BV.4.21
1856 - 1858
ISBN: 3-936338-27-2
Paper DOI: 10.4229/26thEUPVSEC2011-2BV.4.21
0,00 EUR
Document(s): paper


For solar grade silicon (SoG-Si) from metallurgical process route to be competitive in the future the feedstock must enable the same solar cell efficiency potential as compared to cells from traditional silicon (poly-Si) even after light induced degradation. Therefore the detailed investigation and understanding of the degradation effect will allow for an optimized usage of SoG-Si. The use of the accelerated light induced degradation (ALID) technique enables to assess the effect of degradation and its correlation to the oxygen and dopant concentrations in a more detailed way than in classical LID tests. Especially it enables determination of the distributions of the defects, which gives new insights into the formation and distribution of the defects responsible for LID.