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  • Garcia Fernandez, AlbertoKTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Div Appl Phys Chem, SE-10044 Stockholm, Sweden. (author)

Experimental and Theoretical Core Level and Valence Band Analysis of Clean Perovskite Single Crystal Surfaces

  • Article/chapterEnglish2022

Publisher, publication year, extent ...

  • 2022-02-05
  • Wiley,2022
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:kth-311911
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-311911URI
  • https://doi.org/10.1002/smll.202106450DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-202287URI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-474002URI

Supplementary language notes

  • Language:English
  • Summary in:English

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Classification

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

Notes

  • QC 20220609
  • A detailed understanding of the surface and interface properties of lead halide perovskites is of interest for several applications, in which these materials may be used. To develop this understanding, the study of clean crystalline surfaces can be an important stepping stone. In this work, the surface properties and electronic structure of two different perovskite single crystal compositions (MAPbI(3) and Cs(x)FA(1-)(x)PbI(3)) are investigated using synchrotron-based soft X-ray photoelectron spectroscopy (PES), molecular dynamics simulations, and density functional theory. The use of synchrotron-based soft X-ray PES enables high surface sensitivity and nondestructive depth-profiling. Core level and valence band spectra of the single crystals are presented. The authors find two carbon 1s contributions at the surface of MAPbI(3) and assign these to MA(+) ions in an MAI-terminated surface and to MA(+) ions below the surface. It is estimated that the surface is predominantly MAI-terminated but up to 30% of the surface can be PbI2-terminated. The results presented here can serve as reference spectra for photoelectron spectroscopy investigations of technologically relevant polycrystalline thin films, and the findings can be utilized to further optimize the design of device interfaces.

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  • Svanström, SebastianUppsala universitet,Energimaterialens fysik(Swepub:uu)sebsv792 (author)
  • Sterling, Cody M.Stockholms universitet,Fysikum,Stockholm Univ, AlbaNova Univ Ctr, Dept Phys, S-10691 Stockholm, Sweden.(Swepub:su)cost7840 (author)
  • Gangan, AbhijeetStockholms universitet,Fysikum,Stockholm Univ, AlbaNova Univ Ctr, Dept Phys, S-10691 Stockholm, Sweden.(Swepub:su)abga1135 (author)
  • Erbing, AxelStockholms universitet,Fysikum,Stockholm Univ, AlbaNova Univ Ctr, Dept Phys, S-10691 Stockholm, Sweden.(Swepub:su)axer3919 (author)
  • Kamal, ChinnathambiStockholms universitet,Fysikum,Raja Ramanna Centre for Advanced Technology, India; Homi Bhabha National Institute, India,Stockholm Univ, AlbaNova Univ Ctr, Dept Phys, S-10691 Stockholm, Sweden.;Raja Ramanna Ctr Adv Technol, Theory & Simulat Lab, HRDS, Indore 452013, Madhya Pradesh, India.;Homi Bhabha Natl Inst, Training Sch Complex, Mumbai 400094, Maharashtra, India.(Swepub:su)kach5975 (author)
  • Sloboda, TamaraKTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Div Appl Phys Chem, SE-10044 Stockholm, Sweden.(Swepub:kth)u18l9rqa (author)
  • Kammlander, BirgitKTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Div Appl Phys Chem, SE-10044 Stockholm, Sweden.(Swepub:kth)u1f3xfi2 (author)
  • Man, GabrielUppsala universitet,Energimaterialens fysik(Swepub:uu)gabma820 (author)
  • Rensmo, HåkanUppsala universitet,Energimaterialens fysik(Swepub:uu)hakanrm (author)
  • Odelius, MichaelStockholms universitet,Fysikum,Stockholm Univ, AlbaNova Univ Ctr, Dept Phys, S-10691 Stockholm, Sweden.(Swepub:su)odelius (author)
  • Cappel, Ute B.KTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Div Appl Phys Chem, SE-10044 Stockholm, Sweden.(Swepub:kth)u15ztiw5 (author)
  • KTHTillämpad fysikalisk kemi (creator_code:org_t)

Related titles

  • In:Small: Wiley18:131613-68101613-6829
  • In:Small : nano micro: Wiley18:13

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