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  4. Light-induced degradation of silicon solar cells with aluminium oxide passivated rear side
 
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2015
Journal Article
Title

Light-induced degradation of silicon solar cells with aluminium oxide passivated rear side

Abstract
Light-induced degradation (LID) has been shown to significantly affect the performance of multicrystalline silicon (mc-Si) solar cells with aluminium oxide (AlOx) passivated rear side. Within this work, the impact of LID on the conversion efficiency of different silicon solar cell architectures with and without AlOx passivation is investigated. Under conditions representing realistic module operation, significant light-induced degradation of up to Di = -2.9 %relin conversion efficiency has been observed for multicrystalline silicon (mc-Si)solar cells with AlOxpassivation. This degradation has been found to be higher than the degradation of, both,a mc-Si aluminium back surface field(Al-BSF) solar cell and, remarkably, a Czochralski-grown silicon (Cz-Si) solar cell with AlOx passivation. For a more detailed investigation of the interaction of mc-Si and AlOx passivation during degradation,a photoluminescence-based""effective defect""imaging has been performed on AlOx-passivated mc-Si lifetime samples. The local effective defect lifetimerelated to recombination due toLID-induced defects is found to vary strongly in the range of teff,defect = 5 to 75 ms and, furthermore, areas with low effective lifetime could be identified as areas with relatively high dislocation density.
Author(s)
Krauß, Karin
Fertig, Fabian
Menzel, D.
Rein, Stefan  
Journal
Energy Procedia  
Conference
International Conference on Crystalline Silicon Photovoltaics (SiliconPV) 2015  
Open Access
File(s)
Download (1.16 MB)
Rights
CC BY-NC-ND 4.0: Creative Commons Attribution-NonCommercial-NoDerivatives
DOI
10.24406/publica-r-241508
10.1016/j.egypro.2015.07.086
Language
English
Fraunhofer-Institut für Solare Energiesysteme ISE  
Keyword(s)
  • PV Produktionstechnologie und Qualitätssicherung

  • Silicium-Photovoltaik

  • Pilotherstellung von industrienahen Solarzellen

  • Messtechnik und Produktionskontrolle

  • Modulintegration

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