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  • Gouillart, LouisUniv Paris Sud, Ctr Nanosci & Nanotechnol C2N, CNRS, F-91120 Palaiseau, France; CNRS, UMR 9006, IPVF, F-91120 Palaiseau, France (author)

Reflective Back Contacts for Ultrathin Cu(In,Ga)Se2-Based Solar Cells

  • Article/chapterEnglish2020

Publisher, publication year, extent ...

  • 2020
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-414304
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-414304URI
  • https://doi.org/10.1109/JPHOTOV.2019.2945196DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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

Notes

  • We report on the development of highly reflective back contacts (RBCs) made of multilayer stacks for ultrathin CIGS solar cells. Two architectures are compared: they are made of a silver mirror coated either with a single layer of In 2 O 3 :Sn (ITO) or with a bilayer of ZnO:Al/ITO. Due to the improvement of CIGS rear reflectance, both back contacts result in a significant external quantum efficiency enhancement, in agreement with optical simulations. However, solar cells fabricated with Ag/ITO back contacts exhibit a strong shunting behavior. The key role of the ZnO:Al layer to control the morphology of the top ITO layer and to avoid silver diffusion through the back contact is highlighted. For a 500-nm-thick CIGS layer, this optimized RBC leads to a best cell with a short-circuit current of 27.8 mA/cm 2 (+2.2 mA/cm 2 as compared to a Mo back contact) and a 12.2%-efficiency (+2.5% absolute).

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  • Chen, Wei-ChaoUppsala universitet,Solcellsteknik(Swepub:uu)chewe640 (author)
  • Cattoni, AndreaUniv Paris Sud, Ctr Nanosci & Nanotechnol C2N, CNRS, F-91120 Palaiseau, France (author)
  • Goffard, JulieUniv Paris Sud, Ctr Nanosci & Nanotechnol C2N, CNRS, F-91120 Palaiseau, France (author)
  • Riekehr, LarsUppsala universitet,Fasta tillståndets elektronik(Swepub:uu)larri928 (author)
  • Keller, JanUppsala universitet,Solcellsteknik(Swepub:uu)janke498 (author)
  • Jubault, MarieEDF R&D, IPVF, F-91120 Palaiseau, France (author)
  • Naghavi, NegarCNRS, UMR 9006, IPVF, F-91120 Palaiseau, France (author)
  • Edoff, Marika,1965-Uppsala universitet,Solcellsteknik(Swepub:uu)maribode (author)
  • Collin, StéphaneUniv Paris Sud, Ctr Nanosci & Nanotechnol C2N, CNRS, F-91120 Palaiseau, France (author)
  • Univ Paris Sud, Ctr Nanosci & Nanotechnol C2N, CNRS, F-91120 Palaiseau, France; CNRS, UMR 9006, IPVF, F-91120 Palaiseau, FranceSolcellsteknik (creator_code:org_t)

Related titles

  • In:IEEE Journal of Photovoltaics10:1, s. 250-2542156-33812156-3403

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