Acceleration and mitigation of carrier-induced degradation in p-type multi-crystalline silicon

D. N. R. Payne*, C. E. Chan, B. J. Hallam, B. Hoex, M. D. Abbott, S. R. Wenham, D. M. Bagnall

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)

Abstract

Recently, a new carrier-induced defect has been reported in multi-crystalline silicon (mc-Si), and has been shown to be particularly detrimental to the performance of passivated emitter and rear contact (PERC) cells. Under normal conditions, this defect can take years to fully form. This Letter reports on the accelerated formation and subsequent passivation of this carrier-induced defect through the use of high illumination intensity and elevated temperatures resulting in passivation within minutes. The process was tested on industrial mc-Si PERC solar cells, where degradation after a 100 hour stability test was suppressed to only 0.1% absolute compared to 2.1% for non-treated cells.

Original languageEnglish
Pages (from-to)237-241
Number of pages5
JournalPhysica Status Solidi - Rapid Research Letters
Volume10
Issue number3
DOIs
Publication statusPublished - Mar 2016
Externally publishedYes

Keywords

  • light-induced degradation
  • carrier-induced degradation
  • multi-crystalline materials
  • silicon
  • passivated emitter and rear contact solar cells

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