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Experimental and Th...
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Larsen, Jes K.Uppsala universitet,Solcellsteknik
(författare)
Experimental and Theoretical Study of Stable and Metastable Phases in Sputtered CuInS2
- Artikel/kapitelEngelska2022
Förlag, utgivningsår, omfång ...
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2022-06-20
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Wiley,2022
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:kth-324938
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-324938URI
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https://doi.org/10.1002/advs.202200848DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-494003URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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QC 20230327
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The chalcopyrite Cu(In,Ga)S2 has gained renewed interest in recent years due to the potential application in tandem solar cells. In this contribution, a combined theoretical and experimental approach is applied to investigate stable and metastable phases forming in CuInS2 (CIS) thin films. Ab initio calculations are performed to obtain formation energies, X-ray diffraction (XRD) patterns, and Raman spectra of CIS polytypes and related compounds. Multiple CIS structures with zinc-blende and wurtzite-derived lattices are identified and their XRD/Raman patterns are shown to contain overlapping features, which could lead to misidentification. Thin films with compositions from Cu-rich to Cu-poor are synthesized via a two-step approach based on sputtering from binary targets followed by high-temperature sulfurization. It is discovered that several CIS polymorphs are formed when growing the material with this approach. In the Cu-poor material, wurtzite CIS is observed for the first time in sputtered thin films along with chalcopyrite CIS and CuAu-ordered CIS. Once the wurtzite CIS phase has formed, it is difficult to convert into the stable chalcopyrite polymorph. CuIn5S8 and NaInS2 accommodating In-excess are found alongside the CIS polymorphs. It is argued that the metastable polymorphs are stabilized by off-stoichiometry of the precursors, hence tight composition control is required.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Sopiha, Kostiantyn V.Uppsala universitet,Solcellsteknik(Swepub:uu)kosso407
(författare)
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Persson, ClasKTH,Processer,Univ Oslo, Ctr Mat Sci & Nanotechnol, Dept Phys, Box 1048, NO-0316 Oslo, Norway.;Royal Inst Technol, Dept Mat Sci & Engn, SE-10044 Stockholm, Sweden.(Swepub:kth)u16hf74r
(författare)
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Platzer Björkman, Charlotte,1976-Uppsala universitet,Solcellsteknik(Swepub:uu)chpla516
(författare)
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Edoff, Marika,1965-Uppsala universitet,Solcellsteknik(Swepub:uu)maribode
(författare)
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Uppsala universitetSolcellsteknik
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Advanced Science: Wiley9:232198-3844
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