Modulated surface texturing of temporary Al foils substrates for high-efficiency thin-film, flexible solar cells

Gianluca Limodio, Davide Bartesaghi, Govind Padmakumar, Devika Rajagopal, Aditya Mehul Shah, Edward Hamers, Arno Smets

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

This work focuses mainly on development of modulated surface texturing of Al substrate for thin-film, silicon-based, flexible solar cells. We compared the current roll-to-roll process at industrial level with a newly developed lab-scale texturing that offers better performance both with KOH and NaOH etching of Al foil. The kinetics of these etching chemicals, modelled with an Arrhenius equation, is evaluated in both methods, activation energy and pre-exponential factor are calculated depending on etching concentration. We also deployed a new roll-to-roll experiment that shows better optical properties than the baseline. Finally, we also show the first results of micromorph tandem devices on the baseline texturing.

Original languageEnglish
Title of host publication2021 IEEE 48th Photovoltaic Specialists Conference, PVSC 2021
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1103-1105
Number of pages3
ISBN (Electronic)9781665419222
DOIs
Publication statusPublished - 2021
Event48th IEEE Photovoltaic Specialists Conference, PVSC 2021 - Fort Lauderdale, United States
Duration: 20 Jun 202125 Jun 2021

Publication series

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

Conference

Conference48th IEEE Photovoltaic Specialists Conference, PVSC 2021
CountryUnited States
CityFort Lauderdale
Period20/06/2125/06/21

Keywords

  • Al substrate
  • etching
  • flexible
  • thin-film solar cells

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