Observation of core-level binding energy shifts between (100) surface and bulk atoms of epitaxial CuInSe{sub 2}

Journal Article · Tue Apr 01 00:00:00 EST 1997 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.118717· OSTI ID:534420

Nelson, A J ^[1]; Berry, G; Rockett, A ^[2]; Shuh, D K ^[3]; Carlisle, J A; Sutherland, D G; Terminello, L J ^[4]

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1. Department of Physics, Colorado School of Mines, Golden, Colorado 80401 (United States)
2. Department of Materials Science, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)
3. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
4. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

Synchrotron radiation soft x-ray photoemission spectroscopy was used to directly observe Se 3d core-level binding energy shifts from surface atoms of the (100) face of epitaxial CuInSe{sub 2}/ GaAs(100). High-resolution spectra show two sets of Se 3d{sub 5/2,3/2} spin-orbit components separated by 0.6 eV, with the low-binding-energy peaks being associated with the surface atoms. However, surface state emission from Se p states in the valence band was not observed due to the low photoionization cross sections. Cation bonding-antibonding states were observed in the valence band and are centered at about 1.0 and 3.1 eV below the valence band edge. {copyright} {ital 1997 American Institute of Physics.}

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 534420
• Journal Information: Applied Physics Letters, Vol. 70, Issue 14; Other Information: PBD: Apr 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
COPPER SELENIDES
ELECTRONIC STRUCTURE
INDIUM SELENIDES
PHOTOEMISSION
SYNCHROTRON RADIATION
BINDING ENERGY
CATIONS
SPECTRAL SHIFT
VAPOR PHASE EPITAXY
PHOTOELECTRON SPECTROSCOPY
L-S COUPLING