Fabrication of Poly-Si on Locally Etched SiOx as Passivating Contacts for c-Si Solar Cells

Caroline Lima Salles, William Nemeth, Harvey Guthrey, Sumit Agarwal, Paul Stradins

Research output: NRELPresentation

Abstract

Proof-of-concept for polysilicon on locally etched oxide (PLEO) contacts. Room temperature approach (via MACE) to engineer pinholes decouples charge-carrier transport across contact from passivation scheme of choice. 19 and 17% PLEO devices fabricated on double-side textured and saw-damage etched n Cz wafers, respectively. Preliminary work on polysilicon on locally etched nitride/oxide (PLENO) contacts. 0.2 fA/cm2 achieved with p PLENO; contact displays Ohmic behavior but still very resistive due to low pinhole density.
Original languageAmerican English
Number of pages16
StatePublished - 2021

Publication series

NamePresented at the 48th IEEE Photovoltaic Specialists Conference (PVSC 48), 20-25 June 2021

NREL Publication Number

  • NREL/PR-5900-80273

Keywords

  • c-Si
  • metal-assisted chemical etch
  • passivating contact
  • photovoltaic
  • PLEO
  • poly-Si
  • PV

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