EPJ Web of Conferences (Jan 2020)

CdS versus ZnSnO buffer layers for a CIGS solar cell: a depth-resolved analysis using the muon probe

  • Ribeiro Eduardo,
  • Alberto Helena V.,
  • Vilão Rui C.,
  • Gil João M.,
  • Weidinger Alois,
  • Salomé Pedro M.P.,
  • Prokscha Thomas,
  • Suter Andreas,
  • Salman Zaher

DOI
https://doi.org/10.1051/epjconf/202023305004
Journal volume & issue
Vol. 233
p. 05004

Abstract

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The influence of a buffer layer in the surface of a Cu(In,Ga)Se2 (CIGS) solar cell material is studied using implanted positive muons as a probe. A depth resolved analysis of the muon data suggests that both CdS and ZnSnO reduce the width of a defect layer present at the CIGS surface to about half its original value. Additionaly, CdS is able to reduce the intensity of the distur¬bance in the defected region, possibly due to a surface reconstrution in CIGS.