Electron Irradiation Induced Deep Centers in Hydrothermally Grown ZnO

Authors

Z-Q. FangFollow
B. ClaflinFollow
David C. Look, Wright State University - Main CampusFollow
Gary C. Farlow, Wright State University - Main CampusFollow

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 Li_Zn 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 V_Zn.

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

Repository Citation

Fang, Z., Claflin, B., Look, D. C., & Farlow, G. C. (2007). Electron Irradiation Induced Deep Centers in Hydrothermally Grown ZnO. Journal of Applied Physics, 101 (8), 86106.
https://corescholar.libraries.wright.edu/physics/158

DOI

10.1063/1.2719003