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  • Martin, Natalia M.Uppsala universitet,Solcellsteknik,Solar Cell Technology, Department of Materials Science and Engineering, Uppsala University, SE-751 21 Uppsala, Sweden (author)

Atomic Layer Grown Zinc-Tin Oxide as an Alternative Buffer Layer for Cu2ZnSnS4-Based Thin Film Solar Cells : Influence of Absorber Surface Treatment on Buffer Layer Growth

  • Article/chapterEnglish2022

Publisher, publication year, extent ...

  • 2022-10-14
  • American Chemical Society (ACS),2022
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-496838
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-496838URI
  • https://doi.org/10.1021/acsaem.2c02579DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-55541URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Zn1-xSnxOy (ZTO) deposited by atomic layer deposition has shown promising results as a buffer layer material for kesterite Cu2ZnSnS4 (CZTS) thin film solar cells. Increased performance was observed when a ZTO buffer layer was used as compared to the traditional CdS buffer, and the performance was further increased after an air annealing treatment of the absorber. In this work, we study how CZTS absorber surface treatments may influence the chemical and electronic properties at the ZTO/CZTS interface and the reactions that may occur at the absorber surface prior to atomic layer deposition of the buffer layer. For this, we have used a combination of microscopy and synchrotron-based spectroscopies with variable information depths (X-ray photoelectron spectroscopy, high-energy X-ray photoelectron spectroscopy, and X-ray absorption spectroscopy), allowing for an in-depth analysis of the CZTS near-surface regions and bulk material properties. No significant ZTO buffer thickness variation is observed for the differently treated CZTS absorbers, and no differences are observed when comparing the bulk properties of the samples. However, the formation of SnOx and compositional changes observed toward the CZTS surface upon an air annealing treatment may be linked to the modified buffer layer growth. Further, the results indicate that the initial N2 annealing step integrated in the buffer layer growth by atomic layer deposition, which removes Na-COx species from the CZTS surface, may be useful for the ZTO/CZTS device performance.

Subject headings and genre

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  • Törndahl, Tobias,1974-Uppsala universitet,Solcellsteknik,Solar Cell Technology, Department of Materials Science and Engineering, Uppsala University, SE-751 21 Uppsala, Sweden(Swepub:uu)totor079 (author)
  • Babucci, MelikeUppsala universitet,Solcellsteknik,Solar Cell Technology, Department of Materials Science and Engineering, Uppsala University, SE-751 21 Uppsala, Sweden(Swepub:uu)melba227 (author)
  • Larsson, FredrikUppsala universitet,Solcellsteknik,Solar Cell Technology, Department of Materials Science and Engineering, Uppsala University, SE-751 21 Uppsala, Sweden;EVOLAR AB, Uppsala 756 51, Sweden(Swepub:uu)frela348 (author)
  • Simonov, Konstantin,1988-Uppsala universitet,Energimaterialens fysik,Molecular and Condensed Matter, Department of Physics and Astronomy, Uppsala University, SE-751 21 Uppsala, Sweden;Department of Materials and Process Development, Swerim AB, P.O. Box 7047, SE-164 07 Kista, Sweden(Swepub:uu)konsi280 (author)
  • Gajdek, DoroteaMalmö universitet,Institutionen för materialvetenskap och tillämpad matematik (MTM),Swerim AB, Dept Mat & Proc Dev, SE-16407 Kista, Sweden.(Swepub:mau)aj6224 (author)
  • Merte, Lindsay R.Malmö universitet,Institutionen för materialvetenskap och tillämpad matematik (MTM),Swerim AB, Dept Mat & Proc Dev, SE-16407 Kista, Sweden.(Swepub:mau)ai6698 (author)
  • Rensmo, HåkanUppsala universitet,Energimaterialens fysik,Molecular and Condensed Matter, Department of Physics and Astronomy, Uppsala University, SE-751 21 Uppsala, Sweden(Swepub:uu)hakanrm (author)
  • Platzer Björkman, Charlotte,1976-Uppsala universitet,Solcellsteknik,Solar Cell Technology, Department of Materials Science and Engineering, Uppsala University, SE-751 21 Uppsala, Sweden(Swepub:uu)chpla516 (author)
  • Uppsala universitetSolcellsteknik (creator_code:org_t)

Related titles

  • In:ACS Applied Energy Materials: American Chemical Society (ACS)5:11, s. 13971-139802574-0962

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