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Near-band-edge slow luminescence in nominally undoped bulk ZnO
Monteiro, T.; Neves, A.J.; Carmo, M.C.; Soares, M.J.; Peres, M.; Wang, J.; Alves, E.; Rita, E.; Wahl, U.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 temper...
Data: 2005
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Origem: RIA - Repositório Institucional da Universidade de Aveiro
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