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Title: Near-band-edge slow luminescence in nominally undoped bulk ZnO
Authors: Monteiro, T
Neves, AJ
Carmo, MC
Soares, MJ
Peres, M
Wang, J
Alves, E
Rita, E
Wahl, Ulrich
Issue Date: Jul-2005
Publisher: Amer inst physics
Series Title: Journal of Applied Physics vol:98 issue:1 pages:-
Abstract: We report the observation of slow emission bands overlapped with the near-band-edge steady-state luminescence of nominally undoped ZnO crystals. At low temperatures the time-resolved spectra are dominated by the emission of several high-energy bound exciton lines and the two-electron satellite spectral region. Furthermore, two donor-acceptor pair transitions at 3.22 and 3.238 eV are clearly identified in temperature-dependent time-resolved spectroscopy. These donor-acceptor pairs involve a common shallow donor at 67 meV and deep acceptor levels at 250 and 232 meV. (c) 2005 American Institute of Physics.
URI: 
ISSN: 0021-8979
Publication status: published
KU Leuven publication type: DI
Appears in Collections:Non-KU Leuven Association publications

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