Modelling kinetics of the boron-oxygen defect system

Brett Hallam*, Malcolm Abbott, Jose Bilbao, Phill Hamer, Nicholas Gorman, Moonyong Kim, Daniel Chen, Katherine Hammerton, David Payne, Catherine Chan, Nitin Nampalli, Stuart Wenham

*Corresponding author for this work

Research output: Contribution to journalConference paper

17 Citations (Scopus)
2 Downloads (Pure)

Abstract

Here we report on modeling kinetics of the boron-oxygen defect system in crystalline silicon solar cells. The model, as supported by experimental data, highlights the importance of defect formation for mitigating carrier-induced degradation. The inability to rapidly and effectively passivate boron-oxygen defects is primarily due to the unavailability of the defects for passivation, rather than any "weakness" of the passivation reaction. The theoretical long-term stability of modules in the field is investigated as a worst-case scenario using typical meteorological year data and the System Advisor Model (SAM). With effective mounting of the modules, the modelling indicates that even in desert locations, destabilisation of the passivation is no concern within 40 years. We also incorporate the quadratic dependence of the defect formation rate on the total hole concentration, and highlight the influence of changing doping densities or changing illumination intensity on the CID mitigation process.

Original languageEnglish
Pages (from-to)42-51
Number of pages10
JournalEnergy Procedia
Volume92
DOIs
Publication statusPublished - 1 Aug 2016
Externally publishedYes
Event6th International Conference on Crystalline Silicon Photovoltaics, SiliconPV 2016 - Chambery, France
Duration: 7 Mar 20169 Mar 2016

Bibliographical note

Copyright the Author(s) 2016. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • boron-oxygen
  • carrier-induced degradation
  • hydrogen passivation
  • light-induced degradation
  • regeneration

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  • Cite this

    Hallam, B., Abbott, M., Bilbao, J., Hamer, P., Gorman, N., Kim, M., ... Wenham, S. (2016). Modelling kinetics of the boron-oxygen defect system. Energy Procedia, 92, 42-51. https://doi.org/10.1016/j.egypro.2016.07.008