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Article
Electron Irradiation Induced Deep Centers in Hydrothermally Grown ZnO
Journal of Applied Physics
  • Z-Q. Fang
  • B. Claflin
  • David C. Look, Wright State University - Main Campus
  • Gary C. Farlow, Wright State University - Main Campus
Document Type
Article
Publication Date
4-1-2007
Abstract

An n-type hydrothermally grown ZnO sample becomes semi-insulating (ρ~108 Ω cm) after 1-MeV electron-irradiation. Deep traps produced by the irradiation were studied by thermally stimulated current spectroscopy. The dominant trap in the as-grown sample has an activation energy of 0.24 eV and is possibly related to LiZn acceptors. However, the electron irradiation introduces a new trap with an activation energy of 0.15 eV, and other traps of energy 0.30 and 0.80 eV, respectively. From a comparison of these results with positron annihilation experiments and density functional theory, we conclude that the 0.15-eV trap may be related to VZn.

Comments

Copyright © 2007, American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in the Journal of Applied Physics 101.8, and may be found at http://jap.aip.org/resource/1/japiau/v101/i8/p086106_s1

DOI
10.1063/1.2719003
Citation Information
Z-Q. Fang, B. Claflin, David C. Look and Gary C. Farlow. "Electron Irradiation Induced Deep Centers in Hydrothermally Grown ZnO" Journal of Applied Physics Vol. 101 Iss. 8 (2007) ISSN: 0021-8979
Available at: http://works.bepress.com/david_look/87/