Propagation mechanism of reverse bias induced defects in Cu(In,Ga)Se2 solar cells

Klaas Bakker, Hanna Nilsson Åhman, Teun Burgers, Nicolas Barreau, Arthur Weeber, Mirjam Theelen

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Partial shading of monolithically interconnected Cu(In,Ga)Se2 (CIGSe) modules can lead to the formation of reverse bias induced defects. These localized defects permanently reduce the output of the PV module. The formation and propagation mechanisms of these defects is studied. Understanding these mechanisms can help to prevent or mitigate damage due to partial shading of CIGSe PV modules. A propagation mechanism is proposed based on both compositional changes found at the edges of the reverse bias induced defects and differences in observed propagation patterns caused by the lateral voltage drop over the TCO layer.

Original languageEnglish
Article number110249
Number of pages9
JournalSolar Energy Materials and Solar Cells
Volume205
DOIs
Publication statusPublished - 1 Feb 2020

Keywords

  • CIGS
  • Partial shading
  • Propagation mechanism
  • Reverse bias
  • TCO
  • Wormlike defects

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