Reduction of Light induced Degradation of Boron-doped Solar-grade Czochralski Silicon by Corona Charging

Yacine Boulfrad, Jeanette Lindroos, Alessandro Inglese, Marko Yli-Koski, Hele Savin

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)
12 Downloads (Pure)

Abstract

This study aims at the reduction of light-induced degradation of boron-doped solar-grade Czochralski silicon wafers by corona charging. The method consists of deposition of negative charges on both surface sides of wafer and keeping the wafer in dark for 24 hours to allow the diffusion of positively-charged interstitial copper towards the surfaces. This method proves to be useful to reduce or eliminate light-induced degradation caused by copper. The degradation was significantly reduced in both intentionally (copper-contaminated) and “clean” samples. The amount of the negative charge was found to be proportional to the reduction strength
Original languageEnglish
Pages (from-to)531-535
JournalEnergy Procedia
Volume38
Issue number0
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

Keywords

  • copper
  • corona charging
  • cz-Si
  • light-Induced degradation
  • solar-grade

Fingerprint Dive into the research topics of 'Reduction of Light induced Degradation of Boron-doped Solar-grade Czochralski Silicon by Corona Charging'. Together they form a unique fingerprint.

Cite this