Flexible silicon heterojunction solar cells on 40 μm thin substrates

Pradeep Balaji, William J. Dauksher, Stuart G. Bowden, Andre Augusto

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

4 Scopus citations


Silicon heterojunction solar cells were manufactured on 40 μm thin substrates using standard industrial manufacturing processes. As the thickness of the substrates goes down, bulk Shockley-Read-Hall recombination is less dominant and surface recombination becomes the main loss mechanism at the maximum power point. In this paper we report our latest accomplishments on 40 μm thin silicon heterojunction solar cells. We have achieved implied open-circuit voltages >760 mV and surface saturation current densities < 2 fA/cm2. The best cell has an efficiency of 20.69%, with an open-circuit voltage of 736 mV, a short-circuit current density of 37.17 mA/cm2 and a fill factor of 75.6%. Replacing the thick ITO front layer with an SiO2/ITO bilayer led to a gain of 1.2 ± 0.2 mA/cm2 in current density.

Original languageEnglish (US)
Title of host publication2019 IEEE 46th Photovoltaic Specialists Conference, PVSC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)9781728104942
StatePublished - Jun 2019
Event46th IEEE Photovoltaic Specialists Conference, PVSC 2019 - Chicago, United States
Duration: Jun 16 2019Jun 21 2019

Publication series

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


Conference46th IEEE Photovoltaic Specialists Conference, PVSC 2019
Country/TerritoryUnited States


  • Flexible photovoltaic cells
  • SHJ solar cells
  • silicon
  • stacked ARC
  • thin PV cells

ASJC Scopus subject areas

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


Dive into the research topics of 'Flexible silicon heterojunction solar cells on 40 μm thin substrates'. Together they form a unique fingerprint.

Cite this