Effect of Substrate Resistivity, Defects and Temperature on Silicon Heterojunction Solar Cells Performance

Apoorva Srinivasa, Richard King, Stuart Bowden, Andre Augusto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this work, we present a comprehensive study to understand how bulk resistivity, defects and operating temperature impact the solar cell performance. Simulations indicate solar cells with excellent surface passivation benefit from substrates with high bulk resistivity as they operate at high injections. For the same defect type and defect concentration, higher lifetime is achieved for wafer with higher bulk resistivity. We fabricate silicon heterojunction lifetime samples on substrates with bulk resistivities from 1 to >15k Ocm and study the behavior of lifetime and implied parameters at different operating temperatures. The effective lifetimes increase with temperature for wafers in all bulk resistivity ranges. Temperature coefficients are shown to be independent of the bulk resistivity and the measured values are in the range of values previous reported on silicon heterojunctions manufactured for standard bulk resistivity (2-3 Ocm) wafers.

Original languageEnglish (US)
Title of host publication2020 47th IEEE Photovoltaic Specialists Conference, PVSC 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2171-2174
Number of pages4
ISBN (Electronic)9781728161150
DOIs
StatePublished - Jun 14 2020
Event47th IEEE Photovoltaic Specialists Conference, PVSC 2020 - Calgary, Canada
Duration: Jun 15 2020Aug 21 2020

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
Volume2020-June
ISSN (Print)0160-8371

Conference

Conference47th IEEE Photovoltaic Specialists Conference, PVSC 2020
CountryCanada
CityCalgary
Period6/15/208/21/20

Keywords

  • Silicon heterojunction solar cell
  • defects
  • high resistivity substrates
  • lifetime
  • temperature effects

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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