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Title: Landau levels of the C-exciton in CuInSe{sub 2} studied by magneto-transmission

The electronic structure of the solar cell absorber CuInSe{sub 2} is studied using magneto-transmission in thin polycrystalline films at magnetic fields up to 29 T. A, B, and C free excitons are resolved in absorption spectra at zero field and a Landau level fan generated by diamagnetic exciton recombination is observed for fields above 7 T. The dependence of the C band exciton binding energy on magnetic fields, calculated using a hydrogenic approximation, is used to determine the C exciton Rydberg at 0 T (8.5 meV), band gap (1.2828 eV), and hole effective mass m{sub so} = (0.31 ± 0.12)m{sub 0} for the C valence sub-band.
Authors:
 [1] ;  [2] ;  [3] ;  [3] ;  [2] ;  [4] ;  [5] ;  [6] ;  [7] ;  [1] ;  [8] ;  [9] ;  [1]
  1. Department of Physics, SUPA, Strathclyde University, Glasgow G4 0NG (United Kingdom)
  2. (Russian Federation)
  3. A.F. Ioffe Physico-Technical Institute, St. Petersburg 194021 (Russian Federation)
  4. St. Petersburg State Polytechnical University, St. Petersburg 195251 (Russian Federation)
  5. Institute of Physics, Academy of Science of Russia, Makhachkala (Russian Federation)
  6. University of Illinois, Urbana, Illinois 61801 (United States)
  7. Scientific-Practical Material Research Centre of the National Academy of Science of Belarus, 19 P. Brovki, Minsk 220072 (Belarus)
  8. (Belarus)
  9. LNCMI, 25 avenue des Martyrs, BP 166, Grenoble Cedex 938042 (France)
Publication Date:
OSTI Identifier:
22350851
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 14; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTRA; BINDING ENERGY; COPPER COMPOUNDS; EFFECTIVE MASS; ELECTRONIC STRUCTURE; EV RANGE; EXCITONS; FILMS; HOLES; INDIUM COMPOUNDS; MAGNETIC FIELDS; MAGNETIC PROPERTIES; POLYCRYSTALS; RECOMBINATION; RYDBERG STATES; SELENIUM COMPOUNDS; SOLAR CELLS; TERNARY ALLOY SYSTEMS; TRANSMISSION; VALENCE