Influence of substrate potential on a-Si:H passivation of Si foils bonded to glass

S. N. Granata, T. Bearda, M. L. Xu, Y. Abdulraheem, I. Gordon, R. Mertens, J. Poortmans

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Abstract In the future solar devices will be manufactured onto thin mono-crystalline silicon wafers (foils) potentially bonded to substrate carriers. In this study, the influence of the substrate carrier potential (grounded or floating) on the amorphous silicon a-Si:H surface passivation of the bonded foil is discussed for the cases of conductive and insulating substrate carriers. A conductive carrier leads to an increase in deposition rate and ion bombardment energy, which is detrimental for sample lifetime. An insulating carrier, e.g., a glass substrate, inverts the trend and improves the a-Si:H surface passivation.

Original languageEnglish
Article number34124
Pages (from-to)9-13
Number of pages5
JournalThin Solid Films
Volume579
DOIs
StatePublished - 31 Mar 2015

Keywords

  • Amorphous silicon
  • Heterojunctions
  • PECVD
  • Plasma potential
  • Silicon solar cells
  • Surface passivation
  • Thin wafers

Funding Agency

  • Kuwait Foundation for the Advancement of Sciences

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