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Title: A photoelectron spectroscopy study of the electronic structure evolution in CuInSe{sub 2}-related compounds at changing copper content

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4752723· OSTI ID:22080430
;  [1];  [2]; ; ;  [3];  [2];  [4];  [5]; ;  [6]
  1. Institute of Metal Physics, UB RAS, 620041 Ekaterinburg (Russian Federation)
  2. Department of Materials Science and Engineering, Royal Institute of Technology, SE-100 44 Stockholm (Sweden)
  3. University of Osnabrueck, D-49069 Osnabrueck (Germany)
  4. Institute of Solid State Chemistry, UB RAS, 620990 Ekaterinburg (Russian Federation)
  5. Department of Chemistry, Belarusian State University of Informatics and Radioelectronics, P. Brovka 6, 220027 Minsk (Belarus)
  6. Department of Physics, SUPA, Strathclyde University, G4 0NG Glasgow (United Kingdom)

Evolution of the valence-band structure at gradually increasing copper content has been analysed by x-ray photoelectron spectroscopy (XPS) in In{sub 2}Se{sub 3}, CuIn{sub 5}Se{sub 8}, CuIn{sub 3}Se{sub 5}, and CuInSe{sub 2} single crystals. A comparison of these spectra with calculated total and angular-momentum resolved density-of-states (DOS) revealed the main trends of this evolution. The formation of the theoretically predicted gap between the bonding and non-bonding states has been observed in both experimental XPS spectra and theoretical DOS.

OSTI ID:
22080430
Journal Information:
Applied Physics Letters, Vol. 101, Issue 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
Country of Publication:
United States
Language:
English