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Title: Electron irradiation induced deep centers in hydrothermally grown ZnO

Abstract

An n-type hydrothermally grown ZnO sample becomes semi-insulating ({rho}{approx}10{sup 8} {omega} 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{sub 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{sub Zn}.

Authors:
; ; ;  [1];  [2]
  1. Semiconductor Research Center, Wright State University, Dayton, Ohio 45435 and Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, Ohio 45435 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20982838
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 101; Journal Issue: 8; Other Information: DOI: 10.1063/1.2719003; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ACTIVATION ENERGY; ANNIHILATION; CRYSTAL GROWTH; DENSITY FUNCTIONAL METHOD; ELECTRON BEAMS; IRRADIATION; POSITRONS; SEMICONDUCTOR MATERIALS; SPECTROSCOPY; TRAPS; ZINC OXIDES

Citation Formats

Fang, Z.-Q., Claflin, B., Look, D. C., Farlow, G. C., and Physics Department, Wright State University, Dayton, Ohio 45433. Electron irradiation induced deep centers in hydrothermally grown ZnO. United States: N. p., 2007. Web. doi:10.1063/1.2719003.
Fang, Z.-Q., Claflin, B., Look, D. C., Farlow, G. C., & Physics Department, Wright State University, Dayton, Ohio 45433. Electron irradiation induced deep centers in hydrothermally grown ZnO. United States. doi:10.1063/1.2719003.
Fang, Z.-Q., Claflin, B., Look, D. C., Farlow, G. C., and Physics Department, Wright State University, Dayton, Ohio 45433. Sun . "Electron irradiation induced deep centers in hydrothermally grown ZnO". United States. doi:10.1063/1.2719003.
@article{osti_20982838,
title = {Electron irradiation induced deep centers in hydrothermally grown ZnO},
author = {Fang, Z.-Q. and Claflin, B. and Look, D. C. and Farlow, G. C. and Physics Department, Wright State University, Dayton, Ohio 45433},
abstractNote = {An n-type hydrothermally grown ZnO sample becomes semi-insulating ({rho}{approx}10{sup 8} {omega} 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{sub 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{sub Zn}.},
doi = {10.1063/1.2719003},
journal = {Journal of Applied Physics},
number = 8,
volume = 101,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}