Low Energy Ion Scattering Studies of Sodium Segregation in ZnO

  • C. Creemers
  • H. Van Hove
  • A. Neyens


The segregation of Na and K, native sub ppm bulk impurities in ZnO is studied on its polar surfaces using photoemission and low energy ion scattering techniques. On the (000\(\overline 1 \))-face, the resulting lowering of the electrostatic surface energy acts as a strong additional segregation force. The angular dependence of the ion intensities, backscattered from the segregated Na, shows that the Na atoms are slightly protruding out of the (000\(\overline 1 \)) surface.


Polar Surface Peak Height Ratio Neutralization Probability Total Scattering Cross Section Ultra High Vacuum Condition 
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Copyright information

© Plenum Press, New York 1981

Authors and Affiliations

  • C. Creemers
    • 1
  • H. Van Hove
    • 1
  • A. Neyens
    • 1
  1. 1.Fysico-chemisch laboratoriumKatholieke Universiteit LeuvenLeuvenBelgium

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