TY - JOUR
T1 - Analysis of time-resolved donor-acceptor-pair spectra of ZnSe
T2 - Li and ZnSe : N
AU - Bäume, P.
AU - Strauf, S.
AU - Gutowski, J.
AU - Behringer, M.
AU - Hommel, D.
PY - 1998
Y1 - 1998
N2 - We measured the time-resolved photoluminescence of ZnSe : Li bulk crystals and ZnSe : N heteroepitaxial layers in the donor-acceptor-pair (DAP) transition region. We found nonexponential decay curves for all samples and all spectral positions except for luminescence from nearest DAPs. It is shown that the approach by Thomas et al. perfectly describes this overall behaviour for ZnSe : Li as well as for ZnSe : N if, for the latter, transitions from the deep donor to the shallow nitrogen acceptor are considered. Our fit of the decay curves yields a binding energy of (50 ± 2) meV for the deep nitrogen-related donor with an effective Bohr radius of (22.8 ± 0.6) Å.
AB - We measured the time-resolved photoluminescence of ZnSe : Li bulk crystals and ZnSe : N heteroepitaxial layers in the donor-acceptor-pair (DAP) transition region. We found nonexponential decay curves for all samples and all spectral positions except for luminescence from nearest DAPs. It is shown that the approach by Thomas et al. perfectly describes this overall behaviour for ZnSe : Li as well as for ZnSe : N if, for the latter, transitions from the deep donor to the shallow nitrogen acceptor are considered. Our fit of the decay curves yields a binding energy of (50 ± 2) meV for the deep nitrogen-related donor with an effective Bohr radius of (22.8 ± 0.6) Å.
KW - Bulk crystal
KW - Donor-acceptor-pairs
KW - II-VI-semiconductors
KW - Impurities
KW - Nitrogen doping
KW - Time-resolved photoluminescence
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U2 - 10.1016/s0022-0248(98)80110-3
DO - 10.1016/s0022-0248(98)80110-3
M3 - Article
AN - SCOPUS:0001002465
SN - 0022-0248
VL - 184-185
SP - 531
EP - 535
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
ER -