Impact of substrate thickness on the surface passivation in high performance n-type solar cells

Andre Augusto, Pradeep Balaji, Joseph Karas, Stuart Bowden

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

4 Scopus citations

Abstract

Recently, silicon solar cells surpassed 26% efficiency. This was a result of remarkable low surface saturation current density and high short-circuit current provided by the SHJ-IBC architecture. In this paper we study the contribution of the different recombination mechanisms to shape the voltage at open-circuit and maximum power for different solar cell thicknesses. We demonstrate thinner cells are required to increase further the efficiency toward the intrinsic limit, as voltage increases and bulk lifetime dependence decreases. Open-circuit voltages over 760 mV were experimental confirmed on 50 μm-thick SHJ structures, leading to bandgap-voltage offsets of 0.349V.

Original languageEnglish (US)
Title of host publication2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2792-2794
Number of pages3
ISBN (Electronic)9781538685297
DOIs
StatePublished - Nov 26 2018
Event7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - Waikoloa Village, United States
Duration: Jun 10 2018Jun 15 2018

Publication series

Name2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC

Other

Other7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
Country/TerritoryUnited States
CityWaikoloa Village
Period6/10/186/15/18

Keywords

  • amorphous materials
  • heterojunction
  • lifetime
  • photovoltaic
  • silicon
  • solar cells
  • surface passivation

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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